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Record #175731:
Oxygen isotope constraints on fluid infiltration associated with high-temperature-low-pressure metamorphism (Chugach metamorphic complex) within the Eocene southern Alaska forearc / John S. Bowman, Virginia B. Sisson, John W. Valley, Terry L. Pavlis.
Title: | Oxygen isotope constraints on fluid infiltration associated with high-temperature-low-pressure metamorphism (Chugach metamorphic complex) within the Eocene southern Alaska forearc / John S. Bowman, Virginia B. Sisson, John W. Valley, Terry L. Pavlis. |
Author(s): | Bowman, John S. Sisson, Virginia B. Valley, John W. Pavlis, Terry L. |
Date: | 2003. |
Publisher: | Boulder, CO : |
In: | Geology of a transpressional orogen developed during ridge-trench interaction along the North Pacific Margin. (2003.), |
Abstract: | Observes pattern of ¹⁸O/¹⁶O depletion of quartz with increasing metamorphic grade in both rock matrix and associated veins, from transect along Tana Glacier. Suggests that pattern of depletion is unlikely to be result of single, geometrically simple fluid flow system operating at scale of exposed metamorphic section and at peak of metamorphism. Finds that lowering of δ¹⁸O in intermediate- to high-grade rocks of Chugach metamorphic was caused by fluid infiltration prior to thermal peak of metamorphism, and that detailed structural, thermal, and oxygen isotope record indicates responsibility of magmatic heating for high-temperature, low-pressure, Buchan metamorphism. |
Notes: | In: Geology of a transpressional orogen developed during ridge-trench interaction along the North Pacific Margin / Virginia B. Sisson, Sarah M. Roeske, Terry L. Pavlis, eds. |
Keywords: | 54.027 -- Isotope analysis. 546.21 -- Oxygen. 551.1/.4 -- Geology. 551.24 -- Geotectonics. 551.241 -- Plate tectonics. 551.781.4 -- Eocene. 552.4 -- Metamorphic rocks. B -- Geology and soil sciences. (*3) -- Arctic regions. (*49) -- Alaska. (*491) -- Alaska, southcentral and southwest. |
SPRI record no.: | 175731 |
LDR 02264naa#a2200000#a#4500 001 SPRI-175731 005 20240329083622.0 007 ta 008 240329s2003####couab##|#####|0||#0#eng#d 035 ## ‡aSPRI-175731 040 ## ‡aUkCU-P‡beng‡eaacr 245 00 ‡aOxygen isotope constraints on fluid infiltration associated with high-temperature-low-pressure metamorphism (Chugach metamorphic complex) within the Eocene southern Alaska forearc /‡cJohn S. Bowman, Virginia B. Sisson, John W. Valley, Terry L. Pavlis. 260 ## ‡aBoulder, CO :‡b[s.n.],‡c2003. 300 ## ‡ap. 237-252 :‡bill., diags., tables, maps. 500 ## ‡aIn: Geology of a transpressional orogen developed during ridge-trench interaction along the North Pacific Margin / Virginia B. Sisson, Sarah M. Roeske, Terry L. Pavlis, eds. 520 3# ‡aObserves pattern of ¹⁸O/¹⁶O depletion of quartz with increasing metamorphic grade in both rock matrix and associated veins, from transect along Tana Glacier. Suggests that pattern of depletion is unlikely to be result of single, geometrically simple fluid flow system operating at scale of exposed metamorphic section and at peak of metamorphism. Finds that lowering of δ¹⁸O in intermediate- to high-grade rocks of Chugach metamorphic was caused by fluid infiltration prior to thermal peak of metamorphism, and that detailed structural, thermal, and oxygen isotope record indicates responsibility of magmatic heating for high-temperature, low-pressure, Buchan metamorphism. 650 07 ‡a54.027 -- Isotope analysis.‡2udc 650 07 ‡a546.21 -- Oxygen.‡2udc 650 07 ‡a551.1/.4 -- Geology.‡2udc 650 07 ‡a551.24 -- Geotectonics.‡2udc 650 07 ‡a551.241 -- Plate tectonics.‡2udc 650 07 ‡a551.781.4 -- Eocene.‡2udc 650 07 ‡a552.4 -- Metamorphic rocks.‡2udc 650 07 ‡aB -- Geology and soil sciences.‡2local 651 #7 ‡a(*3) -- Arctic regions.‡2udc 651 #7 ‡a(*49) -- Alaska.‡2udc 651 #7 ‡a(*491) -- Alaska, southcentral and southwest.‡2udc 700 1# ‡aBowman, John S. 700 1# ‡aSisson, Virginia B. 700 1# ‡aValley, John W. 700 1# ‡aPavlis, Terry L. 773 0# ‡7nnam ‡aVirginia B. Sisson, Sarah M. Roeske, Terry L. Pavlis, eds. ‡tGeology of a transpressional orogen developed during ridge-trench interaction along the North Pacific Margin. ‡dBoulder, CO : [s.n.], 2003. ‡wSPRI-168672 916 ## ‡a2006/06/20 -- JW 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240329 ‡bJW