ae 
and Superior Formations of West Tennessee. 
The exact age of this tei is not known. 
later date than the Cretac 
ay be synchronous with en gravel of 
. ne Mss ississippi bluffs; but of this I have 
no vaca wont 2 (This gravel is not 
indicated on the map. It is represented in 
the section at its eastern end by the group 
of dots. 
Excepting the Paleozoic rocks and the 
gravel just noticed, the distinctive groups 
> ag est Tennessee may be designated as 
. Bottom  aeate Modern. 
8. Bluff Loa Post-tertiary. 
1. Bluff Gein vel, ps 
6. Bluff Lignite, ip Seri Tertiary ? 
5. eo nge San “e LaGra : 
oup, y Tontiaty. 
4, Porere is Group, (pro- 
vision ne 
3. Ripley on ‘oup, Lye tirel; Cretaceous. 
2. Green ies or the shell-bed 
1. Coffee San 
* Atno point 
in Tennessee have I seen gravel run- 
ing under the Cretaceous beds, In 
.—5 
ae 
might be tis as the remains of 
ie ancient shingle of the Mbt sea, or estuary, 
far, however, as m my o rats "have extended, I 
4am compelled to refer air the deposi 
at least, to the same e epoch, 
As to the waters which brought, aod deposited this 
the impressions received in the field are that 
ts, in Tennessee 
oJ 
& * 
z 
=’ 
s 
& 
Ss 
- 
a 
ro 
cm 
5 
8 < 
& 
bes 
® 
#5 
He 
8 
° 
ne 
= 
n Tennessee with the 
wal’ of the Mississippi, the ¢ ais re 
‘eostig havin ng bee ed the 
Mississi u of West Tennessee. In eae par 
lens =p, in one or both, these bodies of water may 
Drs, Harper ris ene, in their respective Missis- 
tpi Re iate this gravel w: i“ is 
ee a? weocrnt fa ferns ne which 
“Orange Sand.” hey state, overlies the 
= part of the State of ceals, to 
The von. many of its ermal age 
ve nd originally appli me 
fa sional sere of te te the mos rt 
* to Hilgard’s Northern Lignitic. With the 
in netion of the gravel described pid 
“aessee of the « Orange Sand” as understood by th 
G ® 
“SHTIN OZT ‘avou IIVH NOLSHIUVHO YF SIHANAW ABL PXOTV NOILLOUS 
Bggs2e 
<{ 
= 
\ 
\\ 
“ 
361 
It is certainly 
ous beds in she Western valley. 
L mets low wa- 
1703 
:| = Buntyn 304, 
— Germantown 378. 
— Collierville 379. 
— Lafayette 316. 
-—~ Moscow 352. 
— La Grange 531. 
~ Grand Juncti’n 575. 
~ Saulsbury 536. 
— Porter’s Cr, 
~ Middleton 407, 
uddy Cr. 
— Chawalla 409, 
— Miss. & Tenn. Jine. 
- Corinth 434. 
— Glendale 495. 
— Burns 463, 
| Tuka 555, 
A 
_ Miss. and Ala, line. 
ve, Iam not we to admit the existence 
Aw. Jour, Scr. Riise SrRizs, eis XXXVII, No. i —May, 1864. 
47 
