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About the Geology of Tutuila

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About the Geology of Tutuila U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Directorate Geologic Resources Division National Park of American Samoa GRI Ancillary Map Information Document Produced to accompany the Geologic Resources Inventory (GRI) Digital Geologic Data for National Park of American Samoa npsa_geology.pdf Version: 3/29/2016 I National Park of American Samoa Geologic Resources Inventory Ancillary Map Information Document for National Park of American Samoa Table of Contents Geolog.i.c. .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 th..e.. .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 Dig.i.t.a..l. .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 Map Un.i.t. .L..i.s..t.......................................................................................................................... 7 Map Un.i.t. .D..e..s..c..r.i.p..t.i.o..n..s............................................................................................................. 9 w ater -.. .W...a..t.e..r. .(..a..n..d.. .s..h..o..r.e..l.in..e..)...................................................................................................................................... 9 landfill .-. .L..a..n..d..f.i.l.l .(..R..e..c..e..n..t.).............................................................................................................................................. 9 plug - P..lu..g.. .(..R..e..c..e..n..t.)...................................................................................................................................................... 9 Ra - Ca..lc..a..r..e..o..u..s.. .s..a..n..d..,. .t.a..lu..s.. .a..n..d.. .a..l.l.u..v..iu..m... .(.R...e..c..e..n..t.)..................................................................................................... 9 Qb - Ca..l.c..a..r.e..o..u..s.. .s..e..d..i.m..e..n..t.s.. .(..R..e..c..e..n..t.-. .P..l.e..i.s..t.o..c..e..n..e..)...................................................................................................... 9 Qa - No..n..c..a..l.c..a..r.e..o..u..s.. .s..e..d..i.m..e..n..t.s..,. .a..l.l.u..v..iu..m... .(.R...e..c..e..n..t.-. .P..l.e..is..t.o..c..e..n..e..).................................................................................. 9 Qm - N...o..n..c..a..lc..a..r..e..o..u..s.. .s..e..d..im...e..n..t.s..,. .m...a..r.s..h..e..s.. .(.R...e..c..e..n..t.-. .P..l.e..is..t.o..c..e..n..e..).............................................................................. 10 Rll - L.e..o..n..e.. .V..o..l.c..a..n..i.c..s..,. .p..a..h..o..e..h..o..e.. .f.l.o..w... .(.R...e..c..e..n..t.)........................................................................................................ 10 Rlc - L..e..o..n..e.. .V...o..lc..a..n..i.c..s..,. .c..i.n..d..e..r. .c..o..n..e.. .a..t. .u..p..p..e..r. .e..n..d.. .o..f.. .s..o..u..r.c..e.. .f.i.s..s..u..r.e.. .(..R..e..c..e..n..t.).......................................................... 10 Rla - L..e..o..n..e.. .V...o..lc..a..n..i.c..s..,. .s..t.o..n..y.. .a..s..h.. .c..o..n..e.. .a..l.o..n..g.. .f.i.s..s..u..r.e.. .(.R...e..c..e..n..t.)................................................................................ 10 Rlt - L.e..o..n..e.. .V...o..lc..a..n..i.c..s..,. .l.it.h..i.c..-.v..i.t.r.i.c.. .t.u..f.f.. .(.R..e..c..e..n..t.).......................................................................................................... 10 Rat - A...u..n..u..'.u.. .T..u..f.f.,. .l.i.t.h..ic.. .v..i.t.r.i.c.. .t.u..f.f.. .(.R..e..c..e..n..t.)................................................................................................................. 10 Qfl - F..it.i.'.U..t.a.. .F..o..r.m...a..t.i.o..n..,. .la..v..a.. .f..lo..w....s.. .(.R..e..c..e..n..t.)............................................................................................................... 10 Qfc - .F..i.t.i'.U..t.a.. .F..o..r..m..a..t.i.o..n..,. .c..i.n..d..e..r. .c..o..n..e.. .(.R...e..c..e..n..t.)........................................................................................................... 10 Qft - F..a..l.e..a..s..a..o.. .F..o..r.m...a..t.io..n..,. .u..n..d..i.f.f..e..r.e..n..t.i.a..t.e..d.. .t.u..f.f. .c..o..m...p..l.e..x.. .(.R..e..c..e..n..t.)............................................................................. 10 Qnt - .N..u..'.u.. .F..o..r.m...a..t.io..n..,. .p..a..l.a..g..o..n..i.t.iz..e..d.. .l.a..p..i.ll.i. .t.u..f.f. .(..R..e..c..e..n..t.-.P..l.e..s..t.o..c..e..n..e..)........................................................................... 11 Qnl - N...u..'u.. .F..o..r..m..a..t.i.o..n..,. .b..a..s..a..l.t. .f.l.o..w...s.. .(.R...e..c..e..n..t.-.P..l.e..s..t.o..c..e..n..e..)........................................................................................... 11 Qlp - L..u..a..t.e..l.e.. .F..o..r.m...a..t.i.o..n..,. .p..a..h..o..e..h..o..e.. .f.l.o..w...s.. .(.P..l.e..s..t.o..c..e..n..e..)............................................................................................. 11 Qlc - L..u..a..t.e..l.e.. .F..o..r.m...a..t.i.o..n..,. .p..o..n..d..e..d.. .la..v..a..s.. .(..P..le..s..t.o..c..e..n..e..).................................................................................................. 11 Qte - .T..u..n..o..a.. .F..o..r.m...a..t.io..n..,. .l.a..v..a.. .f.l.o..w...s.. .(..P..le..s..t.o..c..e..n..e..)........................................................................................................ 11 Qtec -.. .T..u..n..o..a.. .F..o..r.m...a..t.io..n..,. .c..i.n..d..e..r. .c..o..n..e.. .(..P..le..s..t.o..c..e..n..e..).................................................................................................... 11 Qtc - .T..u..n..o..a.. .F..o..r.m...a..t.io..n..,. .v..o..l.c..a..n..i.c.. .d..e..p..o..s..it.s.. .(..P..le..s..t.o..c..e..n..e..)............................................................................................. 11 Qtcc -.. .T..u..n..o..a.. .F..o..r.m...a..t.io..n..,. .c..i.n..d..e..r. .c..o..n..e.. .(..P..le..s..t.o..c..e..n..e..).................................................................................................... 11 Qle - L..a..t.a.. .F..o..r..m..a..t.i.o..n..,. .p..o..s..t.-.c..a..l.d..e..r.a.. .v..o..l.c..a..n..i.c..s.. .(.P..l.e..s..t.o..c..e..n..e..)....................................................................................... 11 Qlec -. .L..a..t.a.. .F..o..r..m..a..t.i.o..n..,. .p..o..s..t.-.c..a..l.d..e..r.a.. .c..i.n..d..e..r. .c..o..n..e.. .(..P..le..s..t.o..c..e..n..e..).................................................................................. 11 Qlel - .L..a..t.a.. .F..o..r.m...a..t.i.o..n..,. .p..o..s..t.-.c..a..l.d..e..r.a.. .l.a..v..a.. .f.l.o..w...s.. .(.P..l.e..s..t.o..c..e..n..e..)..................................................................................... 12 Qli - L.a..t.a.. .F..o..r.m...a..t.i.o..n..,. .in..t.r..a..-.c..a..l.d..e..r.a.. .d..e..n..s..e.. .f.l.o..w...s.. .(..P..le..s..t.o..c..e..n..e..).................................................................................... 12 Qlic - .L..a..t.a.. .F..o..r.m...a..t.i.o..n..,. .in..t.r..a..-.c..a..l.d..e..r.a.. .c..i.n..d..e..r. .c..o..n..e.. .(.P..l.e..s..t.o..c..e..n..e..)................................................................................... 12 Qlil - L..a..t.a.. .F..o..r.m...a..t.io..n..,. .i.n..t.r.a..-..c..a..ld..e..r..a.. .la..v..a.. .f..lo..w....s.. .(.P..l.e..s..t.o..c..e..n..e..)...................................................................................... 12 Pt - Tr.a..c..h..y..t.e.. .p..l.u..g..s.. .a..n..d.. .d..i.k.e..s.. .(..P..le..s..t.o..c..e..n..e..?.. .a..n..d.. .P..l.i.o..c..e..n..e..)........................................................................................ 12 Ptp - T..r.a..c..h..y..t.i.c.. .p..u..m...ic..e.. .d..e..p..o..s..i.t.s.. .(.P..l.e..s..t.o..c..e..n..e..?.. .a..n..d.. .P..l.io..c..e..n..e..)..................................................................................... 12 Po - T.a..p..u..t.a..p..u.. .V...o..lc..a..n..i.c..s.. .(.P..l.e..s..t.o..c..e..n..e..?.. .a..n..d.. .P..l.io..c..e..n..e..)................................................................................................ 12 Ppe - .P..a..g..o.. .V...o..lc..a..n..i.c.. .S..e..r..ie..s..,. .e..x..t.r..a..-.c..a..l.d..e..r.a.. .v..o..l.c..a..n..ic..s.. .(..P..le..s..t.o..c..e..n..e..?.. .a..n..d.. .P..l.i.o..c..e..n..e..)................................................... 12 Ppi - P..a..g..o.. .V..o..l.c..a..n..i.c.. .S..e..r.i.e..s..,. .i.n..t.r.a..-.c..a..l.d..e..r.a.. .v..o..l.c..a..n..i.c..s.. .(.P..l.e..s..t.o..c..e..n..e..?.. .a..n..d.. .P..li.o..c..e..n..e..)...................................................... 12 Ppt - P..a..g..o.. .V...o..lc..a..n..i.c.. .S..e..r..ie..s..,. .l.i.t.h..ic..-..v..it.r..ic.. .t.u..f..f. .(.P..l.e..s..t.o..c..e..n..e..?.. .a..n..d.. .P..l.io..c..e..n..e..)...................................................................
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