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<br />Qls Quaternary Landslide Deposits (Holocene to late slot e o s
<br />- / , -- -� �_• �\ I C -37210 Quaterlage of unconsolidated soil and rock formed by slow to rapid down-
<br />assemblage
<br />QOC'" I -- �� ward and outward mass movement of the material. Characterized by irregu-
<br />' = la hummocky topography and may have associated head scarps.
<br />9165 - it - __ -� a = O/S - W r.
<br />Two � _ -- _��.� - -r�` =�`— ,r 02� - _
<br />\� O
<br />9400 — C to
<br />- // i I _ Qgd Quaternary Glacial Deposits (middle to late Pleistocene): unsorted, sub -
<br />- I / 31N1 mnlumuCHtllwl { angular, poorly consolidated pebble to boulder -size detritus. May be
<br />/ � I ) � + I � modified by mass wasting process. ,
<br />uuu111111 ttuu1H nHul�ul�H�u 11 I m m un uylinNu wNugmpulluUll111 nn nnnuul Iluwirl un l{(!I INluuuulNll1 uunuullnunl0uiwuum ( /
<br />YIIIIII _ ' c Quaternary Alluviun-Colluvium (Pleistocene to Holocene): mixtures of��
<br />_ IQa
<br />clay, sand, silt with some larger rock fragments formed by slow, down
<br />// I I / O 0 1 slope movements of near surface material, locally reworked by fluvial'_
<br />4100
<br />� j I i3; l processes.
<br />/ I v y 8, 0 I
<br />8200 1 df Quaternary Debris Fan (Holocene ?)• angular, unsorted, pebble to boulder
<br />cc T Q sized mixture of soil and rock fragments, formed by gravity dominated'
<br />— — - - - - -- i� f
<br />I _ _. _ Processes.
<br />- - -- - -- l
<br />- _� i ✓ Qp9 Pediment gravels (early Plei Itocene): poorly sorted alluvial gravels
<br />J deposited on a nearby planar, high-level bedrock surface. These deposits
<br />Qgd t� have abundant carbonate accumulation in the C horizon and higher;
<br />\�
<br />Thesengravels weathered odingnandterositon younger gravels.
<br />i T -- 8 5
<br />Qmf Quaternary Mudflow (Holocene ?): dominantly fine - grained material with
<br />o sl p movement of wet,
<br />- 1 i" associated rock fragments formed by the down o e 300
<br />8 25 - - # '- = =- ' " ) •, 7 f I t g viscous masses of soil and colluvial material. _
<br />+ I i -- COC -53356
<br />I- % ; �� 0/s g I Two Masatch Formation - Ohio Creek Conglomerate (Eocene and Paleocene): X793
<br />variegated (red, purple, gray, green) mudstone and siltstone with inter-'
<br />Q
<br />7600 - I bedded gray, lenticular sandstone, locally conglomeratic, chsraterized by
<br />poor exposures and subject to mass wasting processes.
<br />'
<br />Q I DOC / D "D" coat sea outcrop (Upper Cretaceous) locally subject to oxtdizatton,�/�
<br />)- 1\
<br />m � ` � I � ' � � � � t A - � burn, poor exposures.
<br />a O /S �y Kmvr Rollins Sandstone Member of Mesa Verde Formation (Upper Cretaceous) 1`
<br />I A i 1 C -37210 --�i basal member of Mesa Verde Formation, underlaid by Mancos Shale. Con-I
<br />I sists of fine to medium-grained. glauconitic, quartzose regressive beach,
<br />ti C- 27432' _ I deposit, 150 - 200 ft. thick, characterized by whitecapped cliff expo -{j
<br />i. m - g _ ( cures.
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<br />M F P AREA BOUNDARY I _ 760Q
<br />1
<br />II
<br />- - -- PERMIT AREA BOUNDARY
<br />•4
<br />81 FEE COAL LEASE
<br />AREA BOUNDARIES �C- 3721
<br />_ --� -
<br />- I' 1 1 I I II a 11� I I � > l•' _ _
<br />-
<br />unununuull LEASE C -37210
<br />72� _ 600 This certification h Patricia M. S. Farnsworth, a
<br />AREA BOU N DARY _ ' ' - onal Engineer I to
<br />_ s. _ � }, a, o I b � y
<br />�__ 'i
<br />- / b9� r + f�' g Od f d �Professi En in n Colorado, applies strictly a
<br />- -- -LEASE MODIFICATION AREA BGUNDARY - - I \I I; '' T � � _ �r
<br />6 ,
<br />\ boundary adjustment made as a result of Permit Revision
<br />N I o+
<br />/(MV/ - ` i Q No. 03. All other items have been previously certified on
<br />_ o
<br />® this map by other Professional Engineers. Last certified on
<br />61 j "i revisions dated 3 -18 -93 and 4- 17 -93.
<br />000sr v 6
<br />\ 1
<br />8225
<br />1
<br />59 Signature - -
<br />1
<br />\ _ -- -- ► `� �, 76C MAP NO. 2 -2
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<br />8197 „ �� �I� '' `� J
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<br />-�56 to i 5
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<br />n REF. REVISION BY DATE I1 /9 l NO. D_ —C;L
<br />P
<br />( �� 73 v
<br />' !- \� 603a ° \ \� / 5� TR 22 K.C.K. 3/18/93 URFICIAL GEOLOGIC MAP
<br />8000
<br />K.C.K. 4/17/93 SCALE I° 1,000
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<br />(L. R(f' uD
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<br />�'�.. - - �� � � �� I� � : �� i I — � r ! �I ( � ( � ry - - i � � — �i � V� •. _ �� / � � � \. �.� �.� �� DATE -. 5/22/84
<br />ORCHARD VALLEY COAL CORP
<br />�� - r % A ♦ Q' _, / DELTA COUNTY SHEET I OF
<br />VIV �� G� / P. 0. Box 1299 Poonia , CO 81426
<br />DWG N0: FOIi0133
<br />T13S, R91892 W, 61e PM
<br />IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII,
<br />TOPOGRAPHIC BASE MAP US.GS. QUADS, BOWIE, CO., GRAY RESERVOIR
<br />
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