155:
118:
370:
357:
Scott, T. M., The lithostratigraphy of the
Hawthorn Group (Miocene) of Florida: Florida Geological Survey Bulletin 59, 148 p. 1988.
400:
405:
362:
Veatch, O., and
Stevenson, L. W., 1911, Geology of the coastal plain of Georgia: Georgia Geologic Survey Bulletin 26, 466 p.
284:
The
Coosawhatchie Formation varies in color from a light gray to olive gray. It is poorly consolidated, variably clayey and
328:
331:. Here it consists primarily of light gray to greenish gray, poorly to moderately consolidated, dolomite bearing to
395:
308:
367:
390:
311:
factor of the
Coosawhatchie sediments is generally low, forming part of the intermediate confining
249:
257:
324:
265:
261:
253:
269:
41:
8:
138:
170:
194:
303:
Silicified nodules are often present in the sediments and may contain 20% or more
374:
293:
204:
86:
245:
182:
51:
154:
384:
178:
123:
105:
27:
218:
225:
234:
332:
273:
230:
213:
336:
304:
297:
289:
285:
82:
323:
Charlton Member outcrops in just one location, that being northern
244:
The
Coosawhatchie Formation is located on the eastern flank of the
312:
209:
199:
174:
167:
31:
347:
Few to no fossils and mostly contained in the
Charlton Member.
90:
78:
74:
382:
256:. It extends south-southeast and is present in
158:Location of Coosawhatchie Formation of Florida.
288:containing sand which occasionally contain a
292:component but rarely is it dominated with
153:
272:. It is exposed or lies beneath a thin
383:
13:
14:
417:
16:Geologic formation in Florida, US
116:
401:Miocene Series of North America
406:Geologic formations of Florida
279:
1:
350:
148:Dall and Stanley-Brown (1894)
216:, calculates to a period of
7:
239:
10:
422:
342:
318:
335:, silty, sandy, with few
144:
134:
129:
111:
101:
96:
70:
65:
57:
47:
37:
26:
21:
164:Coosawhatchie Formation
22:Coosawhatchie Formation
325:Nassau County, Florida
254:Marion County, Florida
188:
159:
396:Miocene United States
368:USGS: Florida Geology
157:
42:Geological formation
327:near and along the
181:. It is within the
139:Coosawhatchie River
28:Stratigraphic range
373:2009-11-28 at the
171:geologic formation
160:
377:
363:
358:
152:
151:
413:
366:
361:
356:
329:St. Mary's River
222:
122:
120:
119:
19:
18:
421:
420:
416:
415:
414:
412:
411:
410:
391:Neogene Florida
381:
380:
375:Wayback Machine
353:
345:
321:
282:
250:Columbia County
242:
223:
217:
212:~23.03 to 5.33
202:
191:
117:
115:
61:Charlton Member
17:
12:
11:
5:
419:
409:
408:
403:
398:
393:
379:
378:
364:
359:
352:
349:
344:
341:
320:
317:
281:
278:
248:near southern
246:Ocala Platform
241:
238:
190:
187:
183:Hawthorn Group
150:
149:
146:
142:
141:
136:
132:
131:
127:
126:
113:
109:
108:
103:
99:
98:
94:
93:
91:phosphate clay
72:
68:
67:
63:
62:
59:
55:
54:
52:Hawthorn Group
49:
45:
44:
39:
35:
34:
24:
23:
15:
9:
6:
4:
3:
2:
418:
407:
404:
402:
399:
397:
394:
392:
389:
388:
386:
376:
372:
369:
365:
360:
355:
354:
348:
340:
338:
334:
330:
326:
316:
314:
310:
306:
301:
299:
295:
291:
287:
277:
275:
271:
267:
263:
259:
255:
252:and southern
251:
247:
237:
236:
232:
228:
227:
221:million years
220:
215:
211:
207:
206:
201:
197:
196:
186:
184:
180:
179:North Florida
176:
172:
169:
165:
156:
147:
143:
140:
137:
133:
128:
125:
124:United States
114:
110:
107:
106:North Florida
104:
100:
95:
92:
88:
84:
80:
76:
73:
69:
64:
60:
56:
53:
50:
46:
43:
40:
36:
33:
29:
25:
20:
346:
322:
309:permeability
302:
283:
243:
226:Faunal stage
224:
203:
193:
192:
163:
161:
130:Type section
280:Lithography
270:Lake County
235:Hemphillian
385:Categories
351:References
333:calcareous
274:overburden
231:Arikareean
337:carbonate
305:phosphate
298:limestone
290:dolomitic
286:phosphate
135:Named for
83:limestone
66:Lithology
58:Sub-units
371:Archived
315:system.
294:dolomite
240:Location
233:through
173:with an
145:Named by
97:Location
87:dolomite
343:Fossils
319:Members
313:aquifer
258:Alachua
210:Miocene
200:Neogene
175:outcrop
168:Miocene
112:Country
71:Primary
48:Unit of
32:Miocene
339:beds.
307:. The
268:, and
266:Sumter
262:Marion
195:Period
121:
102:Region
205:Epoch
166:is a
219:17.7
162:The
79:clay
75:Sand
38:Type
296:or
214:mya
189:Age
177:in
387::
300:.
276:.
264:,
260:,
229::
208::
198::
185:.
89:,
85:,
81:,
77:,
30::
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
