Bibliographic Citation
| Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
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| Title | Fault-related fluid flow, Beech Mountain thrust sheet, Blue Ridge Province, Tennessee-North Carolina |
| Creator/Author | Waggoner, W.K. ; Mora, C.I. (Univ. of Tennessee, Knoxville, TN (United States). Dept. of Geological Sciences) |
| Publication Date | 1992 Jan 01 |
| OSTI Identifier | OSTI ID: 5589375 |
| Report Number(s) | CONF-921058-- |
| Other Number(s) | ISSN0016-7592; CODEN: GAAPBC |
| Resource Type | Conference |
| Specific Type | Journal Article |
| Resource Relation | Geological Society of America, Abstracts with Programs ; Vol/Issue: 24:7; 1992 annual meeting of the Geological Society of America (GSA); 26-29 Oct 1992; Cincinnati, OH (United States) |
| Subject | 580000 -- Geosciences; GEOLOGIC FORMATIONS-- GEOLOGIC FAULTS;GEOLOGIC FORMATIONS-- HYDROLOGY;NORTH CAROLINA-- GEOLOGIC FORMATIONS;TENNESSEE-- GEOLOGIC FORMATIONS; FLUID FLOW;GEOCHEMISTRY;GRANITES;ISOTOPE RATIO;METEORIC WATER;MINERALOGY;PRECAMBRIAN ERA;ROCK-FLUID INTERACTIONS |
| Related Subject | CHEMISTRY;DEVELOPED COUNTRIES;GEOLOGIC AGES;GEOLOGIC FRACTURES;GEOLOGIC STRUCTURES;GROUND WATER;HYDROGEN COMPOUNDS;IGNEOUS ROCKS;NORTH AMERICA;OXYGEN COMPOUNDS;PLUTONIC ROCKS;ROCKS;USA;WATER |
| Description/Abstract | The latest proterozoic Beech Granite is contained within the Beech Mountain thrust sheet (BMTS), part of a middle-late Paleozoic thrust complex located between Mountain City and Grandfather Mountain windows in the western Blue Ridge of TN-NC.^At the base of the BMTS, Beech Granite is juxtaposed against lower Paleozoic carbonate and elastics of the Rome Fm. along the Stone Mountain thrust on the southeaster margin of the Mountain City window.^At the top of the BMTS, Beech Granite occurs adjacent to Precambrian mafic rocks of the Pumpkin Patch thrust sheet (PPTS).^The Beech Granite is foliated throughout the BMTS with mylonitization and localized cataclasis occurring within thrust zones along the upper and lower margins of the BMTS.^Although the degree of mylonitization and cataclasis increases towards the thrusts, blocks of relatively undeformed granite also occur within these fault zones.^Mylonites and thrusts are recognized as conduits for fluid movement, but the origin of the fluids and magnitude and effects of fluid migration are not well constrained.^This study was undertaken to characterize fluid-rock interaction within the Beech Granite and BMTS.^Extensive mobility of some elements/compounds within the thrust zones, and the isotopic and mineralogical differences between the thrust zones and interior of the BMTS indicate that fluid flow was focused within the thrust zones.^The wide range of elevated temperatures (400--710 C) indicated by qz-fsp fractionations suggest isotopic disequilibrium.^Using a more likely temperature range of 300--400 C for Alleghanian deformation, calculated fluid compositions indicate interactions with a mixture of meteoric-hydrothermal and metamorphic water with delta O-18 = 2.6--7.5[per thousand] for the upper thrust zone and 1.3 to 6.2[per thousand] for the lower thrust zone.^These ranges are similar to isotopic data reported for other Blue Ridge thrusts and may represent later periods of meteoric water influx. |
| Country of Publication | United States |
| Language | English |
| Format | Pages: A187 |
| System Entry Date | 2001 May 13 |
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