108 



GEOLOGICAL REPORT. 



iritii 



GENERAL SECTION uF THE TERTIARY STRATA ( »!•' MISSISSIPPI. 



150 



80 



12 



2<> 



80 



425 



N\MK, CHARACTER AND FOSSILS. 



Grand Gulf Stage, ok Southern Lignitic. — White or gray 

 sandstones, usually soft ; black, blue, green and gray clays and 

 sand-, with small Lignite beds, tree palms, exogenous trees, 

 Arundinaceae. 



10 



Vkjksiu .'la; Stage — 1. Crystalline limestones and blue mails, I 

 with Ostrea Vicksburgensis, 0. gigantea, Cardium diversum, Area \ 

 Mississippiensis, Navicula Miss.. N. lima, Grassatella Miss.. Den- j 

 tiiliinii Miss . Panopaea oblongata, Fulgoraria Miss., Cypraea /infect, \ 

 Madrepora Miss., Pecten Poulsoni, Orbitoides Manti 



2. Ferruginous rock of Red Bluff, with Plagiostoma dumosn 

 Fulgoraria Miss., Mitra Miss., Busyconspiniger, Conus sauridens, 

 Rostellaria velata, Cassidaria tinted, Madrepora (all. to .1/. Miss.}, 

 Dentalium thalloides, Trochita trochiformis, Natica Vicksb., Flabel- 

 hini Wailesii, Osteodes n. sp., Venericardia- planicosta, V. rotunda, 

 Cypricardia sp., and many peculiar species. 

 Lignitic Clay and Lignite, at Vicksburg, and N. of Brandon. 



Jackson Stage. — White (often indurate) and blue marls, with 

 Venericardia planicosta, Rostellaria velata, Cardium Nicolleti, Cor- 

 bula bicarinata, Leda multilineata, Cypraea feriestralis, Conus tor- 

 t-'lis, Gastridium vetustum, Mitra Millingtoni, M. dumo'sa, Voluta 

 dumosa, Morio Petersoni, Umbrella planulata, Osteodes irroratus, 

 Mabellum Wailesii, Trochita alta, Zeuglodon macrospondylus. 



Lignitic Clay and Lignite, at Jackson, Garlandsville, Coonupy Cr. 



Claiborne Stage. — A. Calcareous. — White (sometimes indurate) 

 and blue marls, with Ostrea sellaeformis, O. divaricata, O. panda, 

 Venericardia planicosta, V. rotunda, Rostellaria velata, Monoceros 

 pyruloides, M. fusiformis, Orbis rotella, Natica gibbosa, Anolax 

 gigantea, Oliva Alabamensis, Marginella larvata. 



b. Lignitic Clays and Sands of N. Clarke county ? 



II. Siliceous Claiborne.— S. Neshoba, N. Newton, S. Lauderdale, 

 X.Clarke ; sandstones and claystones with Venericardiap 

 V. rotunda r Monoceros, Pyrula, Voluti Corbula gibbosa. 



Lignitic of N. Lauderdale !, Neshoba. Lark brown and yel- 

 low clays and sands with Lignite — sometimes obscure casts of shells. 

 ? Lignitic of N. Mississippi : 



a. Gray clays and sands of Tippah, sometimes transformed into 

 red shale, with Quercus n. sp., Cur//// n. sp., Populus rl 

 Populus n. sp., Morus?, Ficus lanceoldta, Eeer?, Laurus n. sp., 

 Persea n. sp., C 'ceaf, Olea Americana!, Rhamnus n. sp., 

 Terminalia 2 n. sp., Magnolia Lesqx.!, M. acuminata 



Iroidi .\ Rhus. 



b. Gray clays of Lafayette and Calhoun, with Sabal, Cinnamo- 



S 



c. Gray clays and sands of Winston, with Cycas, Smilaxf 



d. Small estuarian deposits of sandstone with marine shells. 

 Tippah: Venericardia planicosta, Cardium Nicolleti, Trochus, Ostrea. 

 Shongalo : Ost Voluta petrosa, Veneri- 

 cardia rotunda, Turritettavetusta, Lea?. Cardium Nicolleti, Nautilus 

 zigzag. ^^^ 



1* 



