STATE OF MARYLAND
MARYLAND GE OLO GICAL SURVEY
WM BULLO CK CLARK, STATE GE OLOGIST
-
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AGR
MARYLAND GEOLOGICAL SURVEY.
W^* BULL00K CLARK, state Geologist.
IN CO-OPERATION WITH
U. S. BU REAU OF SO |LS
MILTON WHITNEY CHIEF
1902
l 2 3.
Contour interval 20 feet.
Dazzazrvits frzezza sea ſevez.
LEGEN D
Yellow and brown loam, slight-
ly sandy, !” ;%"; Sassafra's
lºg greatest percent&ge 0
clay; good farm lands, wheat, Loan
oats, hay, etc.
#ſº º º, º:
y red clay-loam, which grades *-
into sºciºliº Ng. *
to wheat and grass and small S3,1]
I crops
C l Brownish or ºr'.
eci loam with considerable sand,
Mica–L Iſl silt, and clay, underlain, by a Susquehan Ila,
1. 8-1408, similar subsoil; corn, wheat Gravel
and grass are grown
#. % Or º
oarn, underlain by a yellowish- - ºn 1
brºn loſtºn subsoil; #. Susquehanna
tive, with stunted growth of Clay -
small pines and oaks
Conowingo
Barrens
º º º l*...;
- underlain by yellow and re
Cong W111g0 stiff clay loams; well adapted
Clay to tomatoes and corn, and for-
ests of hard wood
Light yellow loam, mellow and
free from stones, underlain b
heavier yellow loam; fertile
and productive, yielding good
crops of wheat, corn, oats and
hay
Reddish and brown sands, un-
derlain by reddish and yellow
sand subsoil; well adapted for
truck crops and small fruits,
but not so good for wheat and
grass, with forest growth of
oaks and chestnuts
Gravel-loam, whderlain by
coarse gravel subsoil, often par-
tially indurated; generally
poor soil although fairly pro-
ºtive when percentage of
clay is large
Stiff clay, with frequently a
slight covering of gravelly clay-
loam; generally very ºn pro-
ductive, often covered with pine
and oak thickets
Brown and yellow, ºften gray-
ish clay-loam, underlain by
tight yellow or mottled clays;
fine farm lands, with ºn Cºy
dairy farms; often with heavy
growth of oak and pine
*
ºf
º
Mulbe Fry N
º
- % --
^
º |
Coleman
Clay loam
13 -
BQ D. NIDARY”
: a
Clay loam
Clay loan
º
º
Cecil
Mica-Loam
Loam
- - º
Clay loam
Conowingo
Barrens
Loam
SOIL PROF LES
(3 feet deep)
Conowingo
Clay
Z//
…
-
…
º
º
º
Clay loam
Clay loam
ºr oldfield P.
d Field Pt.
Sassafras
Clay loam
Norfolk
Sandy loam.
TMARYLAND AGRIC ULTURAL
EXPERIMENT STATION
H. J. PATTER SON, DIRECTOR
**** ====
Susquehanna
Gravel
Gravel loam
Surveyed by
Clarence W. Dorsey and
Jay A. Bonsteel
|899
L/74. BYA #CA://& Cº. 5,417/MOAPE MC.
****==== -
years way A.
Susquehanna
Clay
Z.
% Gr- ººley
Clay
:
U. S. DEPT OF AGRICULTURE
U. S. BTTIR.EAU OF SOILS
MILTON WHITNETY CHIEF
º
* -
º
wn
|
Clay loam
Z
Z.
|
º
º,%
-
Clay loam


MARYLAND GEOLOGICAL SURVEY
WM B LAR - U. S. GEOLOGICAL SURVEY
BULLOCK C K, STATE GE OLOGIST CHARLES D. WALCOTT, DIRECTOR
|5" -
- - *se-shoe For - -
- - I - / - º -
22 - - | - -
(Lost) *, * - - 19
* PENZNS AN
- - - _CO. C
ND == - T. T. CECITY).
- -- T. Q º º -> º
-º-º:
- -
----
º -- - º -
. . º º - - - º N
2
- º - º -
- Green.
º
-
{
-
º
Earlton
-
-
- 4.
y Mt. Felix .
º
-
= =
* -
---
lºzzsay/arc sarreary-
SHOWING THE
OPOGRAPHY
A N D
ECTION DISTRICT
MARYLAND GEOLOGICAL SURVEY
W* BULL0 CK CLARK, state Geologist
--
*====,
IN CO-OPERATION WITH
U.S. GEOLOGICAL SURVEY -
CHARLES D.WALCOTT D'RECTOR
| | | | | | ||
-
| Grove Riº
4-Miles.
-
3.
Contour interval 201eet.
ZJazewn as mean sea level.
5. Kilometers
Year's Way/-.
d Field Pt.
Galena
Coleman N -
Still º CONVENTIONAL SIGNS
Stil
CULTURE
- - Double-track Street Tunnels
secondary roads railroads railroads
Tº T.
- |
|
| -
Fords State lines County lines District lines Tº ulation Bench marks
stations
RELIEF WATER -
(printed in brown) (printed in blue)
4-5.3 - - - - -
- - - … ºr - º: *** ***.
Figures Depression Cliff's Streams Intermittent Canals and Aqueducts Fresh marshes
(showing heights above (showing height above eón tours Streams ditches
-- - º * surface/ -
76°00'
H. M. Wilson, Chief of Division
Topography by J. W. Thom and W. N. Morrill
Surveyed in 1896 and 1899
Z/74. Bra. AoA wa Co. 54.7///fºre 4fd


MARYLAND GEOLOGICAL SURVEY
U. S. GEOLOGICAL SURVEY
WM BULLO CK CLARK, STATE GEOLOGIST
CHARLES D. WALCOTT, DIRECTOR -
hoºse-sºo's roa
ſ
-
- .
-
-
X- --
vº
-
- -
- - - - - - - - - - - - - - - -
LEGENID - * * \º ºn tº . liº \º ºf sº º'- Hº !. - -
With descriptions of the - - || | - - - - -- " -- ſº - - - - -
geological formations
PLEISTOCENE
Clayey loam, occupying upper
portion of formation, carrying
Poł gravel layers and scattered
boulders; lower half composed
of clay, sand, gravel and
bowlders.
Talbot
Clay loam, occupying upper
part of formation, carrying
Poy gravel layers and scattered
cºw boulders; lower half composed
usually of clay, sand, gravel
- - and bowlders.
WiCOmico
Loam and sand predominant
- - - - - - in the upper portion, sand and
- Pos gravel in the lower part of for-
- - ºnation. -
Sunderland 2 .
- - - - 1:
º:
---- ºl
NEOCENE : º
ºlºr.
Reddish and yellowish sands - - * 1:
N] and gravel, locally indurated - - - §:
- to sandstone and conglomerate. - 3.
, º,
Lafayette
Greensand, sand, and indu-
rated sand; fossiliferous.
Greensand and sand, locally
indurated.
- rºl.
COLUMNAR SECTION
Showing average thicknesses
FORMATION MATERIAL
º: - º
Greenish-black sandy clay, º-rºtº-
containing green concretions Talbot %.º.º. º **Cºn,
and lignite. 45 feet - - ºut-
Wicomico º Loam, sand gravel, º - = 'º - -
35 feet ice-borne boulders. - - \º L -- º -
- - - | Locust Prºs
Interbedded sand, sandy clay -
and clay; sands at times indu-
- rated. Loam, sand, gravel.
ºl.
-)
O
5
- T
Interbedded clay and sand, the
O (n. | former predominating; sand - -
< || * locally indwrated. Lafayette - Sand, gravel, conglomerate.
> | | | 100 feet º:
O Patapsco C
H. —l-
2 Elz
H
, i t *
JURASSIC 7 º sand, indwrated -- 3.15. -
- Interbedded sand, gravel and - 12:
clay; arcose, bed of clay near - -:
base, occupying a quarter of
the total thickness of formation;
thin sand bed at base locally º
indurated. M onmouth : § Greensoºnd, sand.
Patuxent 80 feet -
º
- / º/ -
TRIASSIC //
-
Clay, sand. - - º //
- º
Usually in rusty brown round- |
ed boulders or narrow dikes.
Diabase
///// º º
Z/////////, / ( (.
SILURIAN-CAMBRIAN
% º -
- Interbedded clay - // º Nº.
Or Rºº. § indurated sand. - His N N -
eet - - º -
PRE-CAMBRIAN f ---
In light colored dikes composed
of quartz, feldspar and mica.
Pegmatite
----- Dark compact rocks occurring
- in narrow bands.
Basic Dikes º == - º - ! ". | - Ø ºy P.
* - - - - - - - % =
---- - Compact greenish-gray rock G Sº - - - º,º
- ºº: with inconspicuous quartz and - sº %. Sº º º/.º.
--- º ſº"...º.º.º.º. º --- - º - || ||A
º º ende and epidote abundan - - Nº º - º - ºn- P. Pºes |
- in weathered specimens. == §ºs º - N - º º º - º sen bush Pt. -
e º --~~ -- º/ Nº. - ſº º
- º E - º º --- N - - º º
E. \\\\\\\\\\\\\\\
- º º sº clay, sand, indurated sand.
º º Fº Light green, gray or reddish Patap SCO sº y
º -º-º-º: brown rock, with characteristic 300 feet
broken outcrops. -
* - A -
\\
Peridotite
Pyroxenite
Dark, hard rock with white
feldspar and bronzy pyroxenes.
"Nigger head.”
Dark, hard, sometimes coarse - s º
grained rock weathering in
×ownded bowlders. “Nigger -
head.” -
sº ==
Meta-gabbro == Clay, sand, indurated sand,
- Quartz-hornblende gabbro Pºnt gravel, arcose.
feeſ.
Light granitic rock with folia of
gr black mica in parallel position.
- s - § Micaceous hornblendic an - -
Cambrian §§ § chloritic gneisses and schists -
- Light granitic rock, often OT” §§§ º;....” gabbro,
- G - banded, strongly micaceous |- ). - § sº peridotites and dikes. - -
. . nº and occasionally conglomeritic. Pre-Cambrian § º - - - - -
- - - - - - *Nº. -
* - Unknown thickeness -
|
- - º - -
Mica-greiss - - | -
YEAR’s Vya A.
Howeſſ -
|
º/
...” - - d Field Pt.
rvºvá -
SHOWING THE
GEOLOGICAL FORMATIONS
-
Galena
Coleman - - / - -
-º-º:
-
MARYLAND GEOLOGICAL SURVEY Still pond
W* BULLOCK CLAR K. STATE GEO LOGIST CONVENTIONAL SIGNS
IN CO-OPERATION WITH MINES AND QUARRIES - MINES AND QUARRIES VERTICAL SECTION ON LINE A-B
IN OPERATION NOT working
U.S. GEOLOGICAL SURVEY Building Stone
Clay and Kaolin 23 — Clay and Kaolin
CHARLES D.WALCOTT, DIRECTOR
1902
L
Scale G2500
-
º
º º - - S& Nº. 7 --- - - - -
º - --- --> - -- - - - - -iv-vi - -- - . ->º - - - -º-º-
º§§ - º * Lºº. º w Nº. Zºº º 2. --~~ - --- -º-º: º ºº ºšº - º-- ~- illuſillſ T-,Sea.
º *Vº - --- - º & º - T -- " - - - - - - - º: ºx- Tºº - ---
-º- * º: Kºº. - N º ºv- - --- - º Kºś --- -
--- - - - … - - - - ----- - º
º: - - º ºlº-tºº - - Sºº º:
*
º
--- ---
º
-
º -º-
jº
Flint and Spar Flint and Spar Jusquehanna River
Sea. Zevel - Tºzºzzzzzzzzzzzzzº-P: - º: º: ZZZZZZZZZZ ººzzzzzzzzzº
-T- zºzzº
sº --- º
º º 7" - "… -
L 2 º 5. Kilometers ºº:º - A.Y.A. ºver Sassafras' ſºver
Contour interval 20 feet. Mortheast ºver
ZOazzarº is mezzzz sea levez.
15 - 76
Geology of the Crystalline Rocks by F. Bascom L/WH 8 × 4 ºf My3 Cº. 54/W/MCAPE MO.
Geology of the Coastal Plain Formations by G. B. Shattuck,
A. Bibbins, B. L. Miller and F. B. Wright
Surveyed in 1899, 1900 and 1901