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all geography including DSDP/ODP Sites and Legs
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Primary terms
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Asia
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Far East
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China
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Australasia
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carbon
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Cenozoic
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Bandelier Tuff (10)
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lower Pleistocene (2)
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middle Pleistocene (1)
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upper Pleistocene (1)
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Sierra Ladrones Formation (1)
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Tertiary
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middle Tertiary (1)
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Neogene
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Miocene
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Columbia River Basalt Group (1)
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Grande Ronde Basalt (1)
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middle Miocene (2)
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Paintbrush Tuff (2)
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Tiva Canyon Member (1)
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Topopah Spring Member (2)
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upper Miocene (1)
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Wanapum Basalt (1)
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Pliocene (8)
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Tesuque Formation (4)
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Paleogene
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Mirador Formation (1)
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Oligocene
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quartz monzonite (1)
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mugearite (1)
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basanite (1)
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Invertebrata
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Protista
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isotopes
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Cl-36 (1)
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Pu-240 (1)
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maps (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Agrio Formation (1)
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Hauterivian (1)
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Mesa Rica Sandstone (1)
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Valanginian (1)
-
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Upper Cretaceous
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Cenomanian (2)
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Coniacian (1)
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La Luna Formation (1)
-
-
-
Jurassic
-
Aztec Sandstone (1)
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Heather Formation (1)
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Middle Jurassic
-
Bajocian
-
Tarbert Formation (1)
-
-
-
Upper Jurassic
-
Kimmeridge Clay (1)
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Tithonian (1)
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-
-
Navajo Sandstone (1)
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Triassic
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Upper Triassic (1)
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Vaca Muerta Formation (1)
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metals
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neptunium (1)
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thorium
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Th-232/Th-230 (1)
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alkali metals
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Pajarito Fault
Fault interaction and along-strike variation in throw in the Pajarito fault system, Rio Grande rift, New Mexico Open Access
Evidence for a Single Holocene Paleoseismic Event on the Pajarito Fault, Northern New Mexico Open Access
Geology, structure, and tectonics of the Pajarito fault zone in the Española basin of the Rio Grande rift, New Mexico Available to Purchase
Geometry and rate of extension across the Pajarito fault zone, Española basin, Rio Grande rift, northern New Mexico Available to Purchase
Location of the Pajarito Fault system with respect to the Rio Grande rift i... Open Access
Map showing the 50-km-long Pajarito fault system. Thick gray lines (S1–S7) ... Open Access
Cross sections of the Pajarito fault system. (A) West-east cross sections s... Open Access
Geologic map of the Pajarito fault system west of and within Los Alamos Nat... Open Access
South-to-north profile of the Pajarito fault system (PFS) showing variation... Open Access
Three-dimensional model of the main faults of the Pajarito fault system and... Open Access
Chronology of volcanism, tectonics, and sedimentation near the western boundary fault of the Española Basin, Rio Grande rift, New Mexico Available to Purchase
New 40 Ar/ 39 Ar results from drill-hole cuttings of basaltic and basaltic andesite flows from the Guaje well field of the Pajarito Plateau along the western part of the Española Basin in north-central New Mexico yielded Middle Miocene ages (11.5–13.2 Ma). The volcanic eruptions were closely associated with intense faulting, subsidence, and sedimentation, and the results provide age constraints for the volcanic and tectonic processes along the western margin of the Española Basin. The Middle Miocene volcanic rocks are interbedded within the Santa Fe Group, which is divided into the Hernandez and Vallito Members of the Chamita Formation and the Chama–El Rito Member of the Tesuque Formation, in descending stratigraphic order. New and published geochemical results from the Guaje well field and from other surface and subsurface mafic and intermediate lava flows within the Pajarito Plateau suggest that the volcanic rocks erupted from different magmatic sources and centers close to the Pajarito fault zone. Multiple pulses of volcanic eruptions mostly confined to the hanging wall of the Pajarito fault zone, which represents the current western boundary fault of the Española Basin, suggest that the Pajarito fault system has been sporadically reactivated several times, beginning at least in the Middle Miocene and continuing to the Plio-Pleistocene. Moreover, the volcanic, tectonic, and sedimentary records in the Pajarito Plateau suggest that there is no evidence for eastward migration of tectonic and volcanic activities from the Cañada de Cochiti fault zone in the southern part of the Jemez Mountains to the Pajarito fault zone during the early Pliocene (4–5 Ma).
Structure and tectonic evolution of the eastern Española Basin, Rio Grande rift, north-central New Mexico Available to Purchase
We describe the structure of the eastern Española Basin and use stratigraphic and stratal attitude data to interpret its tectonic development. This area consists of a west-dipping half graben in the northern Rio Grande rift that includes several intrabasinal grabens, faults, and folds. The Embudo–Santa Clara–Pajarito fault system, a collection of northeast- and north-striking faults in the center of the Española Basin, defines the western boundary of the half graben and was active throughout rifting. Throw rates near the middle of the fault system (i.e., the Santa Clara and north Pajarito faults) and associated hanging-wall tilt rates progressively increased during the middle Miocene. East of Española, hanging-wall tilt rates decreased after 10–12 Ma, coinciding with increased throw rates on the Cañada del Almagre fault. This fault may have temporarily shunted slip from the north Pajarito fault during ca. 8–11 Ma, resulting in lower strain rates on the Santa Clara fault. East of the Embudo–Santa Clara–Pajarito fault system, deformation of the southern Barrancos monocline and the Cañada Ancha graben peaked during the early–middle Miocene and effectively ceased by the late Pliocene. The north-striking Gabeldon faulted monocline lies at the base of the Sangre de Cristo Mountains, where stratal dip relations indicate late Oligocene and Miocene tilting. Shifting of strain toward the Embudo–Santa Clara–Pajarito fault system culminated during the late Pliocene–Quaternary. Collectively, our data suggest that extensional tectonism in the eastern Española Basin increased in the early Miocene and probably peaked between 14–15 Ma and 9–10 Ma, preceding and partly accompanying major volcanism, and decreased in the Plio-Pleistocene.