Data for a Comprehensive Survey of Fault Zones, Breccias, and Fractures in and Flanking the Eastern Española Basin, Rio Grande Rift, New Mexico

Dates

Publication Date: 2016-12-30
Start Date: 2003-11-06
End Date: 2006-06-18

Citation

Caine, J.S., Minor, S.A., Grauch, V. J. S., Budahn, J.R., Keren, T.T., and Johnson, M.R., 2016, Data for a comprehensive survey of fault zones, breccias, and fractures in and flanking the eastern Española Basin, Rio Grande Rift, New Mexico: U.S. Geological Survey data release, https://doi.org/10.5066/F7222RXW.

Summary

This release provides the data for a comprehensive survey of geologic structures in the eastern Española Basin of the Rio Grande rift, New Mexico. The release includes data and analyses from 53 individual fault zones and 22 other brittle structures, such as breccia zones, joints, and veins, investigated at a total of just over 100 sites. Structures were examined and compared from poorly lithified Tertiary sediments, as well as Paleozoic sedimentary and Proterozoic crystalline rocks. Data and analyses, include geologic maps; field observations and measurements; orientation, kinematic paleostress analyses and modeling; statistical examination of 575 fault trace lengths derived from aeromagnetic data in the Española and adjacent basins; [...]

Summary

This release provides the data for a comprehensive survey of geologic structures in the eastern Española Basin of the Rio Grande rift, New Mexico. The release includes data and analyses from 53 individual fault zones and 22 other brittle structures, such as breccia zones, joints, and veins, investigated at a total of just over 100 sites. Structures were examined and compared from poorly lithified Tertiary sediments, as well as Paleozoic sedimentary and Proterozoic crystalline rocks. Data and analyses, include geologic maps; field observations and measurements; orientation, kinematic paleostress analyses and modeling; statistical examination of 575 fault trace lengths derived from aeromagnetic data in the Española and adjacent basins; mineralogy and chemistry of host and fault rocks; and investigation of fault versus bolide impact hypotheses for the origin of enigmatic breccias found in the Proterozoic basement rocks. Kinematic and paleostress analyses suggest a record of transitional, and perhaps partitioned, strains from the Laramide orogeny through Rio Grande rifting. Normal faults within Tertiary basin fill sediments are consistent with more typical WNW-ESE Rio Grande extension, perhaps decoupled from bedrock structures due to strength contrasts favoring the formation of new faults in the relatively weak sediments. Analyses of the fault length data indicate power law length distributions similar to those reported from many geologic settings globally. Mineralogy and chemistry in Proterozoic fault-related rocks reveal geochemical changes tied to hydrothermal alteration and nearly isochemical transformation of feldspars to clay minerals. In sediments, fault rocks are characterized by mechanical entrainment with minor secondary chemical changes. Enigmatic breccias are autoclastic, isochemical with respect to their protoliths, and occur near shatter cones believed to be related to a pre-Pennsylvanian impact event. A weak iridium anomaly is associated with the breccias as well as adjacent protoliths, thus an impact shock wave cannot be ruled out for their origin. The types of faults, associated brittle structures, and geochemical attributes provided here can aid in development of conceptual models and approaches useful in identifying testable hypotheses grounded in geological data when assessing ground- and surface-water resources.

Contacts

Point of Contact :: Jonathan Saul Caine
Originator :: Jonathan Saul Caine, Scott A. Minor, V. J. S. Grauch, James R. Budahn, Tucker T. Keren, Michaela R. Johnson
Metadata Contact :: Michaela R. Johnson
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey – ScienceBase
USGS Mission Area :: Energy and Minerals
SDC Data Owner :: Geology, Geophysics, and Geochemistry Science Center

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Data_for_a_Comprehensive_Survey_of_Fault_Zones_Breccias_and_Fractures.xml Original FGDC Metadata	View	123.68 KB	application/fgdc+xml
Table1AbqToEspanolaAeroMagFaultLengths.csv “Table1”		1.54 KB	text/csv
Table2StructureStrainStressModelResults.csv “Table2”		1.81 KB	text/csv
TableSupplemental1_EspanolaBasinStructureRAWData.csv “TableS1”		131.44 KB	text/csv
TableSupplemental3_EspanolaXRDData.csv “TableS3”		14.99 KB	text/csv
TableSupplemental4_EspanolaGeoChemData.csv “TableS4”		50.83 KB	text/csv
TableSupplemental5_EspanolaIrCrCoNiIrData.csv “TableS5”		5.56 KB	text/csv

Shapefile: Faults_Española_SantoDomingo_Albuquerque_Basins.zip
Faults_Española_SantoDomingo_Albuquerque_Basins.shp.xml Original FGDC Metadata	View	123.68 KB
Faults_Española_SantoDomingo_Albuquerque_Basins.dbf		44.6 KB
Faults_Española_SantoDomingo_Albuquerque_Basins.prj		426 Bytes
Faults_Española_SantoDomingo_Albuquerque_Basins.sbn		6.54 KB
Faults_Española_SantoDomingo_Albuquerque_Basins.sbx		620 Bytes
Faults_Española_SantoDomingo_Albuquerque_Basins.shp		206.39 KB
Faults_Española_SantoDomingo_Albuquerque_Basins.shx		5.04 KB

Related External Resources

Type: Related Primary Publication

A comprehensive survey of faults, breccias, and fractures in and flanking the eastern Española Basin, Rio Grande rift, New Mexico	https://doi.org/10.1130/GES01348.1

Purpose

The purpose of this release is to disseminate the data measured and analyzed during this survey. The results provide a broad picture of structural diversity and tectonic evolution along the eastern flank of the central Rio Grande rift and the adjacent Española basin. The results also are representative of many upper crustal faults and associated brittle deformation processes. Such processes commonly associated with a large variety of such structures suggest several conceptual elements and approaches useful in developing testable hypotheses when assessing ground- and surface water resources.

Data for a Comprehensive Survey of Fault Zones, Breccias, and Fractures in and Flanking the Eastern Española Basin, Rio Grande Rift, New Mexico

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