U. S. GEOLOGICAL SURVEY 
BULLETIN NO. 212 PL. II 
Character <>k Strata 
i oast marsh. 
Brown clays and sands with Recent shells and wood 
White, yellow, gt 
>ttled sands will, trace- of 
Red. I)lue, and mottled clays and sands with gravel at 
base. 
Blue and red clays and sands. 
Blue and brown clays and li mot our. 
Blue clays and sandstones 
Blue and red clays, sands, and limestones; limestones 
dolomitized; associated with rulphur and petro- 
leum. 
Blue, brown, red. yellow, and green clays, thinly lam- 
inated, containing numerous limestone concretions, 
fossilit'erous in places, changing to sandy clay to 
the west. 
Gray sands and sandstone, gray and white clays. 
lark-blue gypseous clays and gray sands, with beds of 
lignite. 
Greensands. greensand marl with thin seams of car- 
bonate of Iron, fossilit'erous greensands, green fos- 
silit'erous class, iron ores, and a few small deposits 
of lignite. 
Brow n and blue sands and clays and glaiiconitic snnd- 
stone, « ii 1 1 limonite. 
White, yellow . brow n. red. ^ ray. bin e. and black sands 
with interstratifled and interlaminated clays :nu\ 
heavy beds of lignite. 
GENERAL SECTION OF THE TEXAS-LOUISIANA GULF COASTAL PLAIN. 
