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Colfax Sequence

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Journal Article
Published: 01 May 2014
Journal of Paleontology (2014) 88 (3): 421–433.
... Jurassic diademataceans have been described previously from North America. We describe a new genus and species, Sierradiadema kristini , from a single fossil from the Middle Jurassic (Callovian) Colfax sequence of the Mariposa Formation exposed in the Middle Fork American River drainage of the northern...
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Series: SEPM Core Workshop Notes, SEPM Core Workshop Notes
Published: 01 January 1985
DOI: 10.2110/cor.85.07.0095
EISBN: 9781565762626
... developed and the “C” laminated carbonate was deposited. Intertidal conditions may have existed intermittently. The sequence is capped by the “C” anhydrite deposited in a hypersaline, subtidal restricted environment. Red River paleotopographic highs coincide with “C” laminated carbonate thins and contain...
Journal Article
Journal: AAPG Bulletin
Published: 01 May 1959
AAPG Bulletin (1959) 43 (5): 1093–1094.
... group is truncated locally by the Sangre de Cristo formation. At the east side of the Las Vegas sub-basin the shelf facies is truncated by the Sangre de Cristo formation, which rests on Precambrian rocks of the ancestral Sierra Grande uplift. At the north in Colfax County, on much of the eastern limb...
Journal Article
Journal: GSA Bulletin
Published: 01 April 1994
GSA Bulletin (1994) 106 (4): 531–540.
... of the stratigraphie sequence. In addition, the late Middle Jurassic Colfax Formation is depositionally linked to the early Middle Jurassic olistostrome (Clipper Gap Formation) in the American River Terrane. Recognition of separate terranes and the stratigraphy within them indicate that terrane amalgamation (probably...
Journal Article
Published: 16 September 2014
Bulletin of the Seismological Society of America (2014) 104 (5): 2162–2181.
... lines of evidence indicate that this earthquake sequence was induced by wastewater injection. First, there was a marked increase in seismicity shortly after major fluid injection began in the Raton Basin in 1999. From 1972 through July 2001, there was one M≥4 earthquake in the Raton Basin, whereas 12...
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Series: GSA Field Guide
Published: 01 January 2016
DOI: 10.1130/2016.0041(05)
EISBN: 9780813756417
.... This sequence is ~1800 ft (550 m) thick in the east around Moscow, Idaho, and exceeds 2300 ft (700 m) in the west at Pullman, Washington. Most flows entered from the west into a topographic low, partially surrounded by steep mountainous terrain. These flows caused a rapid rise in base level and deposition...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1984
AAPG Bulletin (1984) 68 (5): 628–636.
... fracture reservoirs that have proven to be productiveof hydrocarbons where there is maximum curvature of brittle interbeds in shale sequences at fairly shallow depths. Fracture reservoirs can occur along anticlines, synclines, monoclines, and in areas where there is an abrupt change in dip and/or strike...
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Series: GSA Field Guide
Published: 07 September 2016
DOI: 10.1130/2016.0044(14)
EISBN: 9780813756448
... River valley, and (4) 10 Be ages on flood boulders deposited downvalley from the moraine sequences. This research was stimulated by a new geologic map of the Granite 7.5′ quadrangle, in which the mapping of surficial deposits was revised based in part on the interpretation of newly acquired LiDAR data...
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Journal Article
Published: 28 August 2018
Bulletin of the Seismological Society of America (2018) 108 (5A): 2594–2613.
... with the intensity observations and with its aftershock sequence, which lasted for at least 27 months. An epicenter between Umapine and Milton‐Freewater best matches the observations. This location falls within the region that experienced the highest intensities of VII and reported the largest number of aftershocks...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2008
GSA Bulletin (2008) 120 (1-2): 179–194.
... include the Owl Gulch volcanics, Clipper Gap Formation, Colfax sequence, Slate Creek Complex, Japer Point Formation, Peñon Blanco Formation, and rocks of the so-called Don Pedro terrane ( Blake et al., 1982 ). Coeval plutonic rocks are associated with the extrusives. Slate Creek Complex and Owl Gulch...
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Journal Article
Journal: Economic Geology
Published: 01 March 2021
Economic Geology (2021) 116 (2): 323–356.
.... Using a combination of petrographic and microanalytical techniques, the paragenetic sequence of minerals within the veins and the compositions of ore minerals were determined to constrain the mechanisms of quartz vein formation and gold deposition. The veins are composed of early quartz that formed...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 1959
AAPG Bulletin (1959) 43 (8): 2003–2007.
... and the Chinle formation though Dobrovolny and Summerson (1946) named a distinct sequence of beds at the top of the Chinle formation, the Redonda member of the Chinle formation. The name was taken from Redonda (also spelled Redondo) Mesa, a large mesa about 15 miles south of Tucumcari, New Mexico. The unit...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1977
AAPG Bulletin (1977) 61 (8): 1173–1182.
... in Figure 2 . General data on all discoveries are shown on Table 1 . Oil and gas production was established in Benzie County for the first time by the drilling of Shell’s 1–36 Dinger-State-Colfax ( Fig. 2 , no. 1). This Niagaran test was spudded on September 17, 1976, and reached 6,015 ft TD...
FIGURES
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1941
AAPG Bulletin (1941) 25 (9): 1745–1767.
... that we have found is in the north wall of the valley bounding Animas City Mountain on its north side, about a mile north of Durango, Colorado, on the southeast flank of the La Plata Mountains. From evidence to be presented we correlate the basal sandstone, unit 1 of this sequence, with the Entrada...
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Series: GSA Field Guide
Published: 07 September 2016
DOI: 10.1130/2016.0044(08)
EISBN: 9780813756448
.... In addition, Yeck et al. (2014) and Worthington et al. (2016) showed that Moho geometries are independent of Laramide arch geometries, necessitating detachment in the lower crust. This field trip will show that the Laramide basement-involved foreland orogen experienced the same sequence of layer-parallel...
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Series: GSA Field Guide
Published: 01 January 2002
DOI: 10.1130/0-8137-0003-5.102
EISBN: 9780813756035
...) the Idaho Springs–Ralston shear zone cuts granitic rocks of the Boulder Creek batholith (1721 ± 15 Ma, U-Pb SHRIMP; Premo and Fanning, 2000 ) and quartzite and phyllite of the Coal Creek quartzite sequence (Wells et al., 1964 ). The quartzite provides a convenient marker layer that outlines the complex...
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Journal Article
Published: 01 January 2007
Rocky Mountain Geology (2007) 42 (2): 67–94.
... retained for archival purposes. Photos were taken after each break, and then assembled in ontogenetic sequence. This method of peeling back specimens ensures that all ontogenetic stages are derived from a single individual. We also studied ontogeny by examining broken phragmocones and juveniles associated...
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Series: GSA Field Guide
Published: 07 September 2016
DOI: 10.1130/2016.0044(15)
EISBN: 9780813756448
... and roads can be readily viewed in Google Earth. Directions to Stop 1: Leave the Colorado Convention Center at 14th Street between Stout and Welton Streets by turning right on 14th Street. Proceed 1 block to Glenarm Street and turn right. Proceed two blocks and turn 45° to the right onto Colfax...
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Journal Article
Published: 19 December 2017
Bulletin of the Seismological Society of America (2018) 108 (1): 66–83.
... magnitude estimates. Bakun et al. (2002) , using the modal seismic intensity data described in this article, estimated an M range between 6.5 and 7.0 for the 1872 earthquake assuming a crustal depth, consistent with the following strong aftershock sequence ( Spence, 1989 ), and determined...
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Series: GSA Field Guide
Published: 07 September 2016
DOI: 10.1130/2016.0044(05)
EISBN: 9780813756448
... to pebbles <2 cm) than that of trough cross-bedding, and cobbles were found to be locally abundant in the troughs. Gravel in trough cross-beds was found to range mainly from 2 to 7 cm, but a small proportion of the gravel was as large as 20 cm. Morse (1985) describes fining-upward sequences in his...
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