U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Directorate Geologic Resources Division Lake Clark National Park and Preserve GRI Ancillary Map Information Document Produced to accompany the Geologic Resources Inventory (GRI) Digital Geologic Data for Lake Clark National Park and Preserve lacl_geology.pdf Version: 4/20/2021 I Lake Clark National Park and Preserve Geologic Resources Inventory Map Document for Lake Clark National Park and Preserve Table of Contents Geologic R.e..s.o..u..r.c..e..s.. .I.n..v.e..n..t.o..r..y. .M...a..p.. .D..o..c..u..m...e..n..t....................................................................... 1 About the N..P..S.. .G...e..o..l.o..g..i.c. .R...e..s.o..u..r.c..e..s.. .I.n..v.e..n..t.o..r..y. .P...r.o..g..r.a..m........................................................... 3 GRI Digital .M...a..p..s. .a..n..d.. .S...o..u..r.c..e.. .M..a..p.. .C...i.t.a..t.i.o..n..s........................................................................... 5 Index Map .................................................................................................................................................................... 6 Map Unit Li.s..t.......................................................................................................................... 7 Map Unit D..e..s..c.r..i.p..t.i.o..n..s........................................................................................................... 12 g - Ice fie.ld..s.. .o..r.. .g..la..c..i.e..r.s.. .(..H..o..l.o..c..e..n..e.. .a..n..d.. .P..le..i.s..t.o..c..e..n..e..)................................................................................................ 12 Qpm - Pla.c..e..r. .a..n..d.. .a..n..t.h..r..o..p..o..g..e..n..ic.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)........................................................................................... 12 Qtf - Tida.l .f..la..t. .a..n..d.. .e..s..t.u..a..r..in..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..).................................................................................................. 12 Qa - Alluv..iu..m... .(.Q...u..a..t.e..r.n..a..r..y..)........................................................................................................................................ 12 Qaf - Allu.v..i.a..l .f..a..n.. .a..n..d.. .t.a..lu..s.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..).................................................................................................... 13 Qc - Collu.v..i.u..m... .(.Q...u..a..t.e..r.n..a..r.y..)....................................................................................................................................... 14 Ql - Lacus..t.r..in..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)....................................................................................................................... 14 Qsw - Sw...a..m..p.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)....................................................................................................................... 15 Qd - Dune.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)............................................................................................................................... 15 Qrg - Roc.k.. .g..l.a..c..ie..r.. .d..e..p..o..s..it.s.. .(..Q..u..a..t.e..r..n..a..r.y..).................................................................................................................. 15 Qsf - Soli.f.l.u..c..t.io..n.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..).................................................................................................................... 16 Qhg - Drif.t.,. .n..e..o..g..l.a..c..i.a..t.io..n.. .(..Q..u..a..t.e..r..n..a..r.y..)...................................................................................................................... 16 Qho - Out.w....a..s..h.. .d..e..p..o..s..it.s..,. .n..e..o..g..l.a..c..i.a..t.io..n.. .(..Q..u..a..t.e..r..n..a..r.y..)............................................................................................... 17 Qhv - Hol.o..c..e..n..e.. .v..o..lc..a..n..i.c.. .r.o..c..k..s.. .(.Q...u..a..t.e..r.n..a..r..y..)............................................................................................................ 18 Qafd - As..h.. .a..n..d.. .t.e..p..h..r.a.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)........................................................................................................... 19 Qmf - Mud..f..lo..w.... .d..e..p..o..s..it.s.. .(..Q..u..a..t.e..r..n..a..r.y..)....................................................................................................................... 19 Qav - Vol.c..a..n..i.c.. .a..v..a..la..n..c..h..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)..................................................................................................... 19 Qbld - Dru..m...li.n.. .d..e..p..o..s..i.t.s.. .in.. .g..r..o..u..n..d.. .m..o..r..a..in..e.. .f..ie..l.d..s.. .o..f. .B...r.o..o..k..s.. .L..a..k.e.. .g..l.a..c..i.a..l .d..e..p..o..s..i.t.s.. .(.l.a..t.e.. .Q...u..a..t.e..r.n..a..r.y..)........................ 19 Qdf - Deb.r..is..-..f.l.o..w... .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)................................................................................................................... 20 Qs - Surf.ic..i.a..l. .d..e..p..o..s..it.s..,. .u..n..d..i.f.f..e..r.e..n..t.i.a..t.e..d.. .(.Q...u..a..t.e..r.n..a..r.y..)............................................................................................... 20 Qls - Land..s..l.i.d..e.. .d..e..p..o..s..it.s.. .(..Q..u..a..t.e..r..n..a..r.y..)....................................................................................................................... 21 Qt - Terra.c..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)........................................................................................................................... 21 Qb - Beac..h.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)............................................................................................................................. 22 Qes - Est.u..a..r.i.n..e.. .d..e..p..o..s..it.s.. .(..Q..u..a..t.e..r..n..a..r.y..)...................................................................................................................... 23 Qmt - Mar.i.n..e.. .t.e..r.r..a..c..e.. .d..e..p..o..s..it.s.. .(..Q..u..a..t.e..r..n..a..r.y..).............................................................................................................. 23 Qm - Glac..ia..l. .d..e..p..o..s..i.t.s..,. .u..n..d..iv..i.d..e..d.. .(.Q...u..a..t.e..r.n..a..r..y..).......................................................................................................... 24 Qw u - Dr.if..t.,. .u..n..d..iv..i.d..e..d..,. .L..a..t.e.. .W...i.s..c..o..n..s..i.n..-.a..g..e.. .g..l.a..c..ia..t.i.o..n..s.. .(.Q...u..a..t.e..r.n..a..r..y..)...................................................................... 24 Qlv - Natu..r.a..l. .le..v..e..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)................................................................................................................. 25 Qsu - Silt .d..e..p..o..s..i.t.s..,. .u..n..d..i.f.f.e..r..e..n..t.ia..t.e..d.. .(..Q..u..a..t.e..r..n..a..r.y..)..................................................................................................... 25 Qsg - Sup..e..r.g..l.a..c..i.a..l .d..r..if..t. .(.Q...u..a..t.e..r.n..a..r.y..)......................................................................................................................... 25 Qek - Esk.e..r. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r..y..)............................................................................................................................ 25 Qoc - Cha..n..n..e..l.e..d.. .g..la..c..i.a..l. .d..e..p..o..s..it.s..,. .k..a..m...e.. .a..n..d.. .k.e..t.t.l.e.. .(.Q...u..a..t.e..r.n..a..r..y..).............................................................................. 26 Qgme - G.r.o..u..n..d.. .m...o..r.a..i.n..e.. .m...o..d..if..ie..d.. .b..y.. .e..s..t.u..a..r..in..e.. .w....a..t.e..r. .(.Q...u..a..t.e..r.n..a..r..y..)......................................................................... 26 Qge - Gla.c..i.o..-.e..s..t.u..a..r.i.n..e.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)........................................................................................................... 26 Qbc - Boo..t.l.e..g..g..e..r. .C..o..v..e.. .F..o..r..m..a..t.i.o..n.. .(.Q...u..a..t.e..r.n..a..r..y..)........................................................................................................ 26 Qdl - Delta..i.c.. .d..e..p..o..s..i.t.s.. .(.Q...u..a..t.e..r.n..a..r.y..)............................................................................................................................ 27 Qew d - D.r..u..m..l.i.n..s.. .a..s..s..o..c..ia..t.e..d.. .w....it.h.. .e..a..r..ly.. .g..l.a..c..i.a..t.io..n..s.. .(..Q..u..a..t.e..r..n..a..r.y..)............................................................................. 27 Qmi - Illino..ia..n.. .g..l.a..c..i.a..t.io..n..s.. .(..Q..u..a..t.e..r..n..a..r.y..)....................................................................................................................... 27 Qmio - Ou..t.w...a..s..h.