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Record #199645:

Till fabric analysis and origin of Portage Glacier Little Ice Age moraines, south-central Alaska / Joao Antonio Santos, Lucio Jose Cunha.

Title: Till fabric analysis and origin of Portage Glacier Little Ice Age moraines, south-central Alaska / Joao Antonio Santos, Lucio Jose Cunha.
Author(s): Santos, Joao Antonio.
Cunha, Lucio Jose.
Date: 2012.
In: Polar Geography. (2012.), Vol. 35(1) (2012)
Abstract: Investigates genesis of Little Ice Age (LIA) moraines present in Portage Glacier Valley, Alaska, using till fabric and grain size analysis. Present-day moraine morphology and sedimentology reveals presence of two types of till and moraines. Clast-rich medium-to-coarse sandy diamicton present in AD 1852 moraine is interpreted to be lodgment till indicating that this feature is primarily Type A push moraine representing glacial advance of Portage Glacier prior to AD 1852. Clast-rich coarse-to-very-coarse sandy diamicton present in AD 1900-1922 moraines is interpreted to be supraglacial melt-out till, indicating that these features are ablation moraines representing glacier recession and moraine building in 1900 and 1922.
Notes:

Polar Geography. Vol. 35(1) :65-81 (2012).

Keywords: 551.32 -- Glaciology: Portage.
551.324.63 -- Land ice, advance and retreat.
551.33 -- Glacial geology.
551.332 -- Glacial deposition.
551.332.21 -- Till or boulder clay. Tillite. Glacial diamictites.
551.332.212 -- Till or boulder clay.
551.332.5 -- Glacial landforms.
551.336 -- Ice ages.
551.4 -- Geomorphology.
E7 -- Glaciology: glacial geology and ice ages.
(*3) -- Arctic regions.
(*49) -- Alaska.
(*490) -- Alaska, southeastern.
SPRI record no.: 199645

MARCXML

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035 ## ‡aSPRI-199645
040 ## ‡aUkCU-P‡beng‡eaacr
100 1# ‡aSantos, Joao Antonio.
245 10 ‡aTill fabric analysis and origin of Portage Glacier Little Ice Age moraines, south-central Alaska /‡cJoao Antonio Santos, Lucio Jose Cunha.
260 ## ‡a[S.l.] :‡b[s.n.],‡c2012.
300 ## ‡ap. 65-81 :‡bill., diags., tables, maps.
500 ## ‡aPolar Geography. Vol. 35(1) :65-81 (2012).
520 3# ‡aInvestigates genesis of Little Ice Age (LIA) moraines present in Portage Glacier Valley, Alaska, using till fabric and grain size analysis. Present-day moraine morphology and sedimentology reveals presence of two types of till and moraines. Clast-rich medium-to-coarse sandy diamicton present in AD 1852 moraine is interpreted to be lodgment till indicating that this feature is primarily Type A push moraine representing glacial advance of Portage Glacier prior to AD 1852. Clast-rich coarse-to-very-coarse sandy diamicton present in AD 1900-1922 moraines is interpreted to be supraglacial melt-out till, indicating that these features are ablation moraines representing glacier recession and moraine building in 1900 and 1922.
650 07 ‡a551.32 -- Glaciology: Portage.‡2udc
650 07 ‡a551.324.63 -- Land ice, advance and retreat.‡2udc
650 07 ‡a551.33 -- Glacial geology.‡2udc
650 07 ‡a551.332 -- Glacial deposition.‡2udc
650 07 ‡a551.332.21 -- Till or boulder clay. Tillite. Glacial diamictites.‡2udc
650 07 ‡a551.332.212 -- Till or boulder clay.‡2udc
650 07 ‡a551.332.5 -- Glacial landforms.‡2udc
650 07 ‡a551.336 -- Ice ages.‡2udc
650 07 ‡a551.4 -- Geomorphology.‡2udc
650 07 ‡aE7 -- Glaciology: glacial geology and ice ages.‡2local
651 #7 ‡a(*3) -- Arctic regions.‡2udc
651 #7 ‡a(*49) -- Alaska.‡2udc
651 #7 ‡a(*490) -- Alaska, southeastern.‡2udc
700 1# ‡aCunha, Lucio Jose.
773 0# ‡7nnas ‡tPolar Geography. ‡gVol. 35(1) (2012) ‡wSPRI-137181
916 ## ‡a2012/07/05 -- JW
917 ## ‡aUnenhanced record from Muscat, imported 2019
948 3# ‡a20220927 ‡bJW