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Kundal, P.

• First Record of Bryozoa from Late Miocene Limestone of Baratang Island, Andaman, India

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Authors

P. Kundal ¹

Affiliations
1 Department of Geology, Nagpur University, Naggur-440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 56, No 4 (2000), Pagination: 441-444

Abstract

Two Bryozoa, Crisia elongata Milne-Edwards and Crisulipora (?) sp. indet. are being recorded for the first time from Late Miocene limestone exposed at Middle Strait, Baratang Island, Andaman.

Keywords

Palaeontology, Bryozoa, Late Miocene, Andaman.

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• Stratigraphy and Palichnology of Nimar Sandstone, Bagh Beds of Jobat Area, Jhabua District, Madhya Pradesh

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Authors

P. Kundal ¹, B. N. Sanganwar ¹

Affiliations
1 Department of Geology, Government Institute of Science, Aurangabad Caves Road, Aurangabad - 431 004, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 51, No 5 (1998), Pagination: 619-634

Abstract

Medium to fine grained Nimar Sandstone has yielded abundant ichnofossils comprising sixteen ichnospecies shared among eleven ichnogenera. These are: Annetuba chapdiensis, Cylindrichnus sp., Granularia yelamensis, Gyrochorte comosa, Imponoglyphus kevadiensis, Keckia annulata, Laevicyclus mongraensis, Palaeophycus heberti, P. intermediatus, P. tubularis, Planolites annularis, P. beverleyensis, P. montanus, Rosselia socialis, Thalassinoides paradoxicus and T. suevicus. Five species, namely, Planolites annularis. P. beverleyensis, Rosselia socialist Thalassinoides paradoxicus and T. suevicus are new additions to our knowledge of the ichnofauna of the Bagh Beds. Palaeophycus intermediatus is the solitary ichnospecies described herein as new.

Keywords

Stratigraphy, Ichnofossils, Nimur Sandstone, Bugh Beds, Madhya Pradesh.

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• Cretaceous Planktonic Foraminifera from the Cherty Limestone of Baratang Island, Andaman, India

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Authors

C. Rajshekhar ¹, R. M. Badve ¹, P. Kundal ¹

Affiliations
1 Department of Geology and Palaeontology, MACS, Pune 411 004, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 35, No 4 (1990), Pagination: 357-365

Abstract

Late Cretaceous planktonic forarmruferal species viz, Guembeluna cretacea Cushman, Pseudoquembehna excolata (Cushman), Ventilabrella sp, Globigerinelloides sp , Hedbergella delrioensis (Carsey), H planispira (Tappan), Globotruncana concavata (Brotzen), G marginata (Reuss), G of rosetta and Rugoglobigerina macrocephala Bronnimann are reported from cherty limestone of Baratang Island, Andaman. The assemblage indicates dominance of Maestrichtian element Based on recorded stratigraphic ranges of different species the cherty limestone is assigned a Campanian-Maestrichtian age.

Keywords

Palaeontology, Invertebrates, Foraminifera, Cretaceous, Andaman.

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• Paleoenvironmentasl Ignificance of Coralline Algae from Early Miocene Bombay Formation, Bombay Offshore Basin

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Authors

P. Kundal ¹, M. B. Bhagat ², Sumedh K. Humane ¹

Affiliations
1 postgraduate Department of Geology, R. T. M. Nagpur University, Law College Square, Nagpur - 440 001, IN
2 Shri Mathuradas Mohota college of Science, Sakkardara Square, Nagpur 440 009, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 2 (2007), Pagination: 274-278

Abstract

This note records four nongeniculate coralline algal species viz. Neogoniolithon sp., Sporolirhon sp., Mesophyllum sp. and Lithoporella sp. and 3 geniculate coralline algal species Jania sp., Corallina sp. ancl Subterraniphyllum sp, from the Early Miocene Bombay Formation, Bombay Offshore Basin, India. Based on coralline algal assemblage, it is inferred that the limestone of Bombay Formation was deposited under low to moderate energy conditions with 10 to 20 rn water depth.

Keywords

Coralline algae, Early Miocene, Bombay Formation, Paleoenvironment, Bombay Offshore Basin.

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• Groundwater Potential Modelling through Remote Sensing and GIS: A Case Study from Rajura Taluka, Chandrapur District, Maharashtra

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Authors

V. M. Rokade ¹, P. Kundal ², A. K. Joshi ³

Affiliations
1 Groundwater Survey and Development Agency, postgraduate Department of Geology, RTM Nagpur University, Law College Campus, Nagpur - 440 001, IN
2 postgraduate Department of Geology, RTM Nagpur University, Law College Campus, Nagpur - 440 001, IN
3 Regional Remote Sensing Service Centre, Department of Space, Post Box 439, Shankar Nagar Post Office, Nagpur - 440 010, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 5 (2007), Pagination: 943-948

Abstract

Our very own survival on earth essentially depends on the water, nature's valuable gift to all life forms. The optimal and sustainable development of the resource is very crucial so that it is accessed reliably to avoid any future problems regarding its qualitative and quantitative availability. The interpretation of remote sensing data in conjunction with conventional data and sufficient ground truth information makes it possible to identify and outline various ground features such as geological structures, geomorphic features and their hydrologic characters, that may serve as direct or indirect indicators of the presence of ground and surface water. Remote sensing and Geographical Information System (GIS) have emerged as essential tools to meet ever-Increasing demand for more precise and timely information. These techniques permit rapid and cost effective natural resource survey and management. Remotely sensed data provides unbiased information on geology, geomorphology, structural pattern and recharging conditions, which logically define the groundwater regime of an area. The present study is an attempt to delineate different groundwater potential zones in Sasti watershed, Taluka Rajura of Chandrapur district (Maharashtra) using an integrated approach of Remote Sensing and Geographical Information System.

Keywords

Watershed, Groundwater Potential, Remote Sensing, Geographical Information System, GIS Modelling, Chandrapur, Maharashtra.

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• Chattian and Burdigalian Dasycladacean Algae from Kachchh, Western India and their Implications on Environment of Deposition

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Authors

P. Kundal ¹, Sumedh K. Humane ¹

Affiliations
1 Postgraduate Department of Geology, R. T. M. Nagpur University, Law College Square, Nagpur- 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 4 (2007), Pagination: 788-794

Abstract

Amongst all fossil calcareous algae, the fossil dasycladales are the most important group of calcareous green algae as these are highly useful for paleoenvironmental and paleobathymetric inferences. The fossil dasycladales comprise over 40 genera and 200 species and these have been documented from different parts of the world in Paleocene-Eocene. However, the record of dasycladales from Indian Cenozoic sediments is very scanty as only 24 dasycladacean species are known. In view of this, the present report of a rich dasycladacean algal assemblage comprising 7 additional species belonging to 6 genera viz., Cymopolia sp., Neomeris ramwadaensis sp. nov., N. plagnensis Deloffre, Acroporella sp., Broeckella sp., Orioporella sp., Clypeina sp. from the limestones of the Maniyara Fort Formation (Chattian) and the Chhasra Formation (Burdigalian) in Kachchh, India is of much significance. The algal assemblage indicates that these limestones were deposited in a shallow marine tropical waters at a depth of about 10-12 m below low tide level.

Keywords

Dasycladacean Algae, Chattian, Burdigalian, Tropical Waters, Low Tide Level, Kachchh, India.

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• Ichnofossils from the Neogene and Quaternary Deposits of Dwarka-Okha Area, Jamnagar District, Gujarat

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Authors

P. Kundal ¹, A. P. Dharashivkar ²

Affiliations
1 postgraduate Department of Geology, RTM Nagpur University, Law College Square, Nagpur - 4400 01, IN
2 postgraduate Department of Geology, Govt Institute of Science, Aurangabad 431 004

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 68, No 2 (2006), Pagination: 299-315

Abstract

A rich and diversified ichnofossil assemblage compnsing seventeen ichnospecres distributed among ten ichnogenera have been discovered for the first time from Neogene-Quaternary deposits of Dwarka-Okha area, Jamnagar district Gujarat, India The ichnospecies are Cyllindrichnus (Howard), Keckia annulala Glocker, Laevicyclus mongraensis Verma, Ophiomorpha borneenszs Keij, 0 irregulazre Frey, Howard and Pryor, 0 nodosa Lundgren, Palaeophycus heberti (Saporta), P tubularis Hall, Planolites annularis Walcott? P beverleyeasis( Billings)P, montanus Richter, Psilonichnus upsilon Frey, Curran and Pemberton, Rhizocorallium karatensis Chplonkar and Ghare, R yelamensis Sanganwar and Kundal, Skolithos ichnospecies Thalassinoides paradoxicus Woodward and T suevzcus Rieth Of these three species, namely Cylindrichnus concentrichus, Ophiomorpha borneensis and 0 lrregulatre Frey, Howard and Pryor are being reported for the first time from India Barring Ranjitpur Limestone Member of Gaj Formation and Aramda Reef Member of Chaya Formation, the rocks of all other members have yielded ichnofossils Present paper provides systematic description of aforementioned seventeen ichnospecies and analyses them for depositional environments The present ichnocoenose defines Skolthos-Cruziana mixed ichnofacies that lndicates httoral to shallow sublittoral sandy shore with very high energy conditions of deposition.

Keywords

Ichnofossils, Neogene, Quaternary, Depositional environments, Dwarka- Okha, Gujarat.

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• Jania, a Geniculate Coralline Alga from Middle Eocene to Lower Miocene of Kachchh, Gujarat

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Authors

P. Kundal ¹, Sumedh K. Humane ¹

Affiliations
1 Postgraduate Dept of Geology, RTM Nagpur University, Law College Square, Nagpur 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 68, No 4 (2006), Pagination: 630-638

Abstract

The present communication documents for the first time Six species of Jania Lamouroux, a geniculate coralline alga of Subfamily Corallinoideae of Family Corallinaceae, Division Rhodophyta from Fulra Limestone Formation (Middle Eocene) exposed at Babia Hill and Jadwa, Maniyara Fort Formation( Oligocene) at Maniyara Dam, Bermoti Hill, Bermoti Nadi Section and Khan Nadi Formation (Lower Miocene) at Mokhra in Kachchh district of Gujarat. Six species of Jania including two new species Jania badvei and J sripadaraoi are reported in this study. The species of Jania suggest clear water shelf depositional environment under low energy for limestone of Fulra Limestone Formation and Khan Nadi Formation, while high energy shelf depositional environment for limestone of Maniyara Fort Formation.

Keywords

Geniculate Coralline Algae, Jania Middle Eocene to Lower Miocene, Depositional Environment, Kachchh, Gujarat.

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• Maastrichtian Dinoflagellates and Palynomorphs from Subsurface Deccan Inter-Trap Sediments, Khandala-Ashta Area, Wardha District, Maharashtra

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Authors

Bandana Samant ¹, C. V. Sakurkar ², P. Kundal ¹, D. M. Mohabey ³

Affiliations
1 Postgraduate Department of Geology, Nagpur University, Nagpur - 440 001, IN
2 Directorate of Geology and Mining, Shivaji Nagar, Nagpur - 440 001, IN
3 Palaeontology Division, Geological Survey of India, Nagpur - 440 006, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 66, No 3 (2005), Pagination: 267-272

Abstract

A 164 m thick Deccan volcano sedimentary sequence comprising five flows, separated by four inter-Trap beds and overlying the Lameta Formation, has been encountered in borehole KA-I , drilled by the Directorate of Geology and Mining (DGM) for the coal exploration in Khandala-Ashta area of Wardha District, Maharashtra. Of these, the inter trap between the two lowermost flows has yielded a rich spore-Pollen assemblage that is dominated by angiosperms and pteridophytes. The presence of palynotaxa such as Azolla cretacea, Ariadnaesporites sp., Gabonisporis vigourouxii, Triporoletes reticulatus and Aquilapollenites bengalensis, suggests a Late Cretaceous (Maastrichtian) age for the sediments. The palynomorphs are associated with a rich dinoflagellate assemblage mostly comprising of Palaeoperidinium and Selenopemphix. The study indicates that the changing climatic and depositional scenario owing to Deccan volcanic eruption has possibly offered the suitable ecological niche for the first appearance of dinoflagellates and gradual domination of the angiosperm flora in the non-Marine ecosystem during Late Cretaceous in India.

Keywords

Dinoflagellates, Inter-Trappeans, Wardha District, Maharashtra.

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• Occurrence of Late Cretaceous Cherty Limestone on Baratang Island, Andaman, India

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Authors

R. M. Badve ¹, C. Rajshekhar ¹, P. Kundal ¹

Affiliations
1 M.A.C.S. Research Institute, Law College Road, Pune 411 004, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 34, No 3 (1989), Pagination: 325-328

Abstract

A red cherty limestone containing rich Globotruncana assemblage of Maestrichtian age is reported from Japani Gole Jetty (NE corner) of Baratang Island, Andaman, India.

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• Geniculate Coralline Algae from the Neogene-Quaternary Sediments in and Around Porbandar, Southwest Coast of India

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Authors

P. Kundal ¹, Shyam N. Mude ²

Affiliations
1 Postgraduate Department of Geology, RTM Nagpur University, Law College Square, Nagpur - 440 001, IN
2 Department of Geology, Fergusson College, Pune - 410 004, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 74, No 2 (2009), Pagination: 267-274

Abstract

The present paper documents nine geniculate coralline algal species, namely Arthrocardia cretacica, Calliarthron antiquum, Corallina hayasaki, C. marshallensis, C. prisca, C. typica, Jania mengaudi, J. sripadaraoi and J. vetus from Neogene-Quaternary sediments of Porbandar area, Saurahtra, Gujarat. Out of nine species, six species namely Arthrocardia cretacica, Calliarthron antiquum, Corallina hayasaki, C. marshallensis, C. prisca and C. typica occur in the Dwarka Formation (lower-middle Miocene), one species Jania sripadaraoi occurs in the Adatiana Member of the Miliolite Formation (early middle-late Pleistocene) and two species namely, Jania mengaudi and J. vetus occur in the Porbandar Calcarenite Member of the Chaya Formation (late Pleistocene-late Holocene). These species indicate that the Dwarka Formation and the Adatiana Member of the Miliolite Formation were deposited in tropical marine environment with moderate to low energy conditions at depths ranging from intertidal to 60 m, and that the Porbandar Calcarenite Member of the Chaya Formation was deposited in a tropical marine environment under moderate to low energy conditions at depths ranging from 40 m to 60 m.

Keywords

Geniculate Coralline Algae, Neogene-Quaternary Sediments, Porbandar, Saurashtra, Gujarat.

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References

• BHATT, N. (2003) The Late Quaternary bioclastic carbonate deposits of Saurashtra and Kachchh, Gujarat, western India: A review. Proc. Indian Natl. Sci. Acad. v.69A, no.2, pp.137-150.
• ISHIJIMA, W. (1954) Cenozoic coralline algae from Western Pacific, Tokyo (Privately Printed), pp.1-87.
• JOHNSON, J.H. (1957) Geology of Saipan, Marina Islands, Pt. 3. Palaeontology: Calcareous algae. USGS Prof. Paper, 280-E, pp.209-246.
• JOHNSON, J.H. (1961a) Fossil algae from Eniwetok, Funafuti and Kita-Daito-Jima. USGS Prof. Paper, 260-Z, pp. 905-948.
• JOHNSON, J. H. (1961b) Limestone building algae and algal limestone. Prof. Contrib. Colorado School of Mines, pp.1-290.
• JOHNSON, J.H. (1964a) Fossil and Recent calcareous algae from Guam. USGS Prof. Paper, 403-G, pp.1-40.
• JOHNSON, J. H. (1964b) Paleocene calcareous red algae from Northern Iraq. Micropaleontology, v. 10, pp. 207-216.
• JOHNSON, J.H. (1969) A review of the Lower Cretaceous algae. Prof. Contrib. Colorado School of Mines, pp.1-180.
• KUNDAL P. and DHARASHIVKAR, A. P. (2003a) Geniculate Coralline alga, Amphiroa from Lower Pliocene of Dwarka-Okha area, Gujarat, India. In: Pradeep Kundal (Ed.), Recent Developments in Micropaleontology and Stratigraphy. Gondwana Geol. Magz. Spec. Publ., v.6, pp.245-259.
• KUNDAL, P. and DHARASHIVKAR, A.P. (2003b) Nongeniculate coralline algae from Lower Pliocene to Late Pleistocene of Dwarka- Okha area, Jamnagar, Gujarat, India. Bull. ONGC, v.40, no.2, pp.31-58.
• KUNDAL, P. and HUMANE, S.K. (2002) Geniculate coralline algae from Middle Eocene to Lower Miocene of Kachchh, Gujarat, India. Gondwana Geol. Magz., v.17(2), pp.89-101.
• KUNDAL, P. and HUMANE, S. (2003) Corallina, a geniculate coralline alga from Middle to Lower Miocene of Kachchh, Gujarat, India. In: Pradeep Kundal (Ed.), Recent Developments in Micropaleontology and Stratigraphy. Gondwana Geol. Magz. Spec. Publ., v.6, pp.261-275.
• KUNDAL, P. and HUMANE, S. (2006) Jania, a geniculate coralline alga from Middle Eocene to Lower Miocene of Kachchh, Gujarat, India. Jour. Geol. Soc. India, v.68, pp.630-638.
• KUNDAL, P. and MUDE, S.N. (2009) Nongeniculate coralline algae from the Neogene-Quaternary sediments from Porbandar area of Saurashtra, Gujarat. Jour. Palaeontol. Soc. India (in press).
• KUNDAL, P. and WANJARWADKAR, K.M. (2000) Jania Lamouroux from Late Paleocene limestone of Middle Andaman, India, Bull. ONGC, v.37, no.1, pp.227-237.
• MATHUR, U.B., VERMA, K.K. and MEHRA, S. (1988) Tertiary- Quaternary stratigraphy of Porbandar area, southern Saurashtra, Gujarat. Geol. Surv. India Spec. Publ. No.11, v.2, pp.333-345.
• MISRA, P.K. , JAUHRI, A.K., KISHOR, S. and SINGH, S.K. (2002). Calcareous algae from the Lakadong Formation of the South Shillong Plateau, NE India. Rev. Paleobiol., v.21, no.2, pp.717-734.
• PANDEY, D.K., BAHADUR, T. and MATHUR, U.B. (2007) Stratigraphic distribution and depositional environment of the Chaya Formation along the Northwestern coast of Saurashtra peninsula, Western India. Jour. Geol. Soc. India, v.69(6), pp.1215-1230.
• WANJARWADKAR, K.M. (2000) Fossil Calcareous Algae and Ichnofossils from Palaeocene-Eocene sediments of Middle Andaman Island, Andaman. Unpub. Ph.D. thesis of Dr. BAMU, Aurangabad, pp. 1-179.

• A Note on Rare Structure of Fossil Coralline Algae from the Southwest Coast of India

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Authors

Shyam N. Mude ¹, P. Kundal ²

Affiliations
1 Department of Geology, Fergusson College, Pune - 411 004, IN
2 Department of Geology, RTM Nagpur University, Nagpur - 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No 2 (2010), Pagination: 380-382

Abstract

The coralline algae (Rhodophyta) are well preserved in the sediments of the Dwarka Formation in and around Porbandar area, southwest coast of India. There are few records of the preservation of genicula in the fossil coralline algae. Three algal fragments with genicula are noted and recorded from the area.

Keywords

Fossil Coralline Algae, Genicula, Dwarka Formation, Porbandar, Gujarat.

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• Dasycladalean Algae and their Depositional Environments in the Sylhet Limestone Formation (Lower-Middle Eocene), Bengal Basin

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Authors

Sumedh K. Humane ¹, Savita N. Chaurpagar ¹, Samaya S. Humane ¹, P. Kundal ¹

Affiliations
1 Postgraduate Department of Geology, RTM Nagpur University, Law College Square, Nagpur - 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 76, No 1 (2010), Pagination: 75-85

Abstract

A very rich and diversified dasycladalean algal assemblage has been discovered from the Sylhet Limestone Formation (lower-middle Eocene) of the Bengal Basin of India for the first time. The depositional environments of the Sylhet Limestone Formation have been discussed based on the presence of the 11 species of the dasycladalean algae belonging to the three families Dasycladaceae (Cymopolia inflataramosa Segonzac, C. mayaenese Johnson and Kaska, C. paronai Raineri, Cymopolia sp.), Triploporaceae (Dissocladella lunata Segonzac, Dissocladella sp., Jodotella sloveniaensis Deloffre and Radoicic) and Acetabulariaceae (Clypeina socanensis Deloffre and Radoicic, Clypeina sp., Terquemella sp., Neomeris sp.). The lower Eocene Sylhet Limestone Formation revealed predominance of dasycladalean algal assemblage with the halimedacean and udoteacean algae and rare occurrence of coralline algae. This suggests their luxuriant growth in the open lagoonal to shelf environment at the depth of 5-6 m in the warm waters. There is a gradual decrease in the dasycladalean species and genera in the middle Eocene Sylhet Limestone Formation. The predominance of coralline algae associated with the Sporolithon indicates that the limestone of middle Eocene Sylhet Limestone Formation have been deposited at the littoral to shallow, high energy open shelf marine environments at a depth of about 40-60 m in warm tropical waters.

Keywords

Dasycladalean Algae, Lower-Middle Eocene, Sylhet Limestone Formation, Depositional Environment, Bengal Basin.

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• Ichnology of Bhuban and Boka Bil Formations, Oligocene-Miocene Deposits of Manipur Western Hill, Northeast India

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Authors

M. Chandra Singh ¹, P. Kundal ², R. A. S. Kushwaha ³

Affiliations
1 Department of Geology, Imphal College, Imphal - 795 001, IN
2 PG Department of Geology, RTM Nagpur University, Nagpur - 440 001, IN
3 Department of Earth Sciences, Manipur University, Imphal - 795 003, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 76, No 6 (2010), Pagination: 573-586

Abstract

Oligocene-Miocene deposits of Bhuban and Boka Bil Formations, Surma Group, Manipur Western Hill consist of well preserved ichnofossil assemblages. These formations are represented by eight lithofacies such as Massive sandstone (Sm), Rippled marked argillaceous sandstone (Sr), Wavy laminated sandstone-siltstone-silty shale (Sw), Laminated shale (Fl), Massive mudstone (Fm), Trough cross-bedded sandstone (St), Lenticular laminated sandstonesiltstone- silty shale (Sll) and Laminated to massive sandstone-siltstone (Ssc). Fifteen ichnospecies were identified, which further categories into Skolithos, Cruziana, and Skolithos/Cruziana ichnofacies. Overall distribution pattern and behavioural nature of the ichnoassemblage and sedimentological attributes suggests that the sediments of Bhuban and Boka Bil Formations were deposited under frequent fluctuating sea level, moderate to strong energy condition, subtidal to lower intertidal environment, rich in organic nutrients.

Keywords

Ichnofossil, Depositional Environment, Oligocene-Miocene, Surma Group, Manipur.

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• Dasycladacean Algae from Paleocene to Oligocene Rocks of Baratang Island, Andaman, India

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Authors

R. M. Badve ¹, P. Kundal ²

Affiliations
1 Geology and Palaeontology Group, Agharkar Research Institute, G.G. Agharkar Road, Pune - 411 004, IN
2 Department of Geology, Govt. Institute of Science, Aurangabad - 431 004, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 51, No 4 (1998), Pagination: 485-492

Abstract

The calcareous coarse-grained sandstones occurring both in the Baratang Group (Lower Paleocene to Lower Eocene) and the Port Blair Group (Middle Eocene to Oligocene) yielded a rich dasycladacean algal flora comprising four species namely: Broeckella baratangensis sp. nov., Dissocladella deserta Elliott, Neomeris plagnensis Dellofre and Trinocladus indicus sp. nov. They have Tethyan affinities and indicate shallow marine tropical water having a maximum depth of about 5-6 m below low tide level.

Keywords

Palaeontology, Algae, Paleocene, Andaman.

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• Generic Distinguishing Characteristics and Stratigraphic Ranges of Fossil Corallines: An Update

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Authors

P. Kundal ¹

Affiliations
1 PG Department of Geology, Rashtrasant Tukadoji Maharaj Nagpur University, Law College Square, Nagpur - 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 78, No 6 (2011), Pagination: 571-586

Abstract

Corallines or coralline algae are carbonate secreting and strongly calcified red algae of the order Corallinales of division Rhodophyta. Architecturally, the corallines have two groups, the nongeniculate and geniculate coralline forms. Corallines are used as a potential tool for paleoecology, paleoenvironments and paleobathymetry. Coralline algae are builder of porous and permeable carbonate reservoir rocks for hydrocarbon and reefs rich in hydrocarbon. The old approach, ca. prior to 1977, of taxonomy of fossil coralline genera has been replaced by the modern approach that established during the last decade using certain distinguishing features such as arrangement of basal filaments, cell fusions, conceptacle perforations and orientation of filaments around conceptacles of living corallines. The earliest confirmed fossil record of coralline algae is from the Hauterivian (Early Cretaceous) and from the Hauterivian to the Pleistocene 9 nongeniculate coralline genera, namely Distichoplax, Lithophyllum, Lithoporella, Lithothamnion, Mesophyllum, Neogoniolithon, Phymatolithon, Spongites and Sporolithon and 7 geniculate genera, viz. Amphiroa, Arthrocardia, Calliarthron, Corallina, Jania, Metagoniolithon and Subterraniphyllum having different stratigraphic ranges are unequivocally known as fossils. After 1977, we do not have a comprehensive publication giving the generic distinguishing characteristics and stratigraphic ranges of both nongeniculate and geniculate corallines. The present paper gives an update of distinguishing characteristics of fossil coralline algal genera and their stratigraphic ranges.

Keywords

Fossil Nongeniculate and Geniculate Coralline Algae, Distinguishing Characters, Stratigraphic Ranges.

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References

• ADEY, W.H. (1979) Crustose coralline algae as microenvironmental indicator for the Tertiary. In: J. Gray and A.J. Bouco (Eds.), Historical biogeography. Oregon State Univ. Press, pp.459- 464.
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• Additional Coralline Algae from the Lower Miocene to Late Holocene Sediments of the Porbandar Group, Gujarat

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Authors

Shyam N. Mude ¹, P. Kundal ²

Affiliations
1 Department of Geology, Fergusson College, Pune - 411 004, IN
2 Department of Geology, RTM Nagpur University, Nagpur - 440 001, IN

Source

Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 1 (2012), Pagination: 69-76

Abstract

The Neogene-Quaternary sediments well exposed in the Porbandar Basin are characterized by coralline algae. The limestone, calc-arenites and marls are the dominant lithology of this sequence. The present paper documents ten species of coralline algae. Among these, the nongeniculate coralline algae are represented by four species and geniculate coralline algae include six species. The sediments yielding this algal flora range in age from the Lower Miocene to Late Holocene.

Keywords

Nongeniculate, Geniculate, Coralline Algae, Porbandar, Gujarat.

Full Text

     

References

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