Zircons from the Copper Flat Intrusion, Hillsboro, New Mexico

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dc.degree.department Accounting and Information Systems en_US
dc.degree.discipline Accounting and Information Systems en_US
dc.degree.grantor Texas Tech University en_US
dc.degree.level Masters en_US
dc.degree.name M .S . en_US
dc.rights.availability unrestricted en_US
dc.creator Wilbanks , John Randall en_US
dc.date.accessioned 2014 -02 -19T18 :42 :09Z
dc.date.available 2011 -02 -18T23 :36 :29Z en_US
dc.date.available 2014 -02 -19T18 :42 :09Z
dc.date.issued 1966 -05 en_US
dc.identifier.uri http : / /hdl .handle .net /2346 /20265 en_US
dc.description.abstract Zircon crystal growth trends of the Copper Flat quartz monzonite intrusion , Hillsboro , New Mexico , are more variable near the intrusive contacts than toward the central portion of the intrusion . Length and width measurements of zircon crystals recovered from 36 samples were statistically treated using the method of the reduced major axis . Eight of the 36 samples have reduced major axes significantly different from the mean growth trend calculated for 34 of the 36 samples . Six of these eight samples were obtained from locations and elevations near the roof of the intrusion . The other two samples represent material from the bottom of holes drilled near an inward -sloping contact of the intrusion . Because zircon is an early -forming mineral in granitic magmas , different physico -chemical conditions , particularly water concentration near the intrusive margins , are thought to control growth patterns . Fewer differences in zircon growth trends are found near the central portion of the intrusion , reflecting the more uniform environment during zircon crystallization . The two anomalous samples from greater depths may represent the marginal fades of the intrusion , thus supporting the hypothesis that the intrusion is a funnel -shaped pluton . en_US
dc.language.iso en _US en_US
dc.publisher Texas Tech University en_US
dc.subject Geology - - New Mexico - - Hillsboro en_US
dc.subject Zircon en_US
dc.title Zircons from the Copper Flat Intrusion , Hillsboro , New Mexico en_US
dc.type Electronic Thesis en_US


Zircons from the Copper Flat Intrusion, Hillsboro, New Mexico. Master's thesis, Texas Tech University. Available electronically from http : / /hdl .handle .net /2346 /20265 .

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