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Gallatin Deposit

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Journal Article
Journal: GSA Bulletin
Published: 01 November 1955
GSA Bulletin (1955) 66 (11): 1385–1430.
... in latest Paleocene or early Eocene. In Oligocene time isostatic arching produced normal faults on the west side of the Bridger Range. The range was lifted relative to the Gallatin Valley, and the east-flowing drainage was impeded so that sediments accumulated in the basins. These movements and deposition...
Journal Article
Journal: GSA Bulletin
Published: 01 July 1961
GSA Bulletin (1961) 72 (7): 1003–1013.
...G. D ROBINSON Abstract The Three Forks Basin sprawls where the intricately deformed sedimentary and volcanic rocks of the Disturbed Belt along the Rocky Mountain front are faulted against the Precambrian metamorphic rocks that make the core of the Tobacco Root, Madison, Gallatin, and Beartooth...
Journal Article
Journal: AAPG Bulletin
Published: 01 February 1957
AAPG Bulletin (1957) 41 (2): 212–262.
.... Tertiary deposits are present along the southern margin and at places higher in the mountains. The top of the Middle Cambrian Flathead sandstone makes an upward migration in time toward the northeast of 22 feet per mile. The Upper Cambrian Du Noir member of the Gallatin formation tongues out eastward...
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Journal Article
Published: 01 January 2001
Rocky Mountain Geology (2001) 36 (2): 81–98.
... that the depositional setting once again became free of substantial detrital influx. Keefer and van Lieu (1966) and Martin et al. (1980) suggested that the upper Park accumulated in shallow-water settings. The Upper Cambrian Gallatin Group discon-formably overlies the Middle Cambrian Park Shale...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 1951
AAPG Bulletin (1951) 35 (8): 1781–1814.
... formation. Jurassic strata are thin or missing in the northern and central parts of the region, as the result of the development of a small but prominent positive area, and they thicken eastward into Gallatin County and southward and westward in Beaverhead County. The marine Jurassic rocks were deposited...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2013
GSA Bulletin (2013) 125 (5-6): 961–984.
...-grained overbank facies. Fluvial systems in the eastward-adjacent Jefferson, Three Forks, and Gallatin Basins transitioned from higher-energy braided to more bank-stable, anastomosing fluvial systems dominated by deposition of fine-grained overbank and lacustrine material. This transition is marked...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1983
AAPG Bulletin (1983) 67 (9): 1460.
... of Heyl’s 38th Parallel lineament; however, the relation between them has been obscured by Pleistocene lacustrine and fluvial sedimentation. Over 400 new gravity stations, with approximate 0.5 km (0.3 mi) spacing, were occupied in eastern Saline and western Gallatin Counties. The data were reduced...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1983
AAPG Bulletin (1983) 67 (9): 1457.
... strike-slip movements. Pleistocene deposits do not exhibit offsets across the fault zone, indicating that no tectonic activity has occurred since the beginning of that epoch. The trend of the fault zone changes abruptly from east-west in southern Gallatin and easternmost Saline Counties to south...
Journal Article
Journal: GSA Bulletin
Published: 01 April 1963
GSA Bulletin (1963) 74 (4): 407–436.
... is satisfactory for these beds, but the formation is clarified and redefined, and a principal reference section is introduced to indicate more complete, more accessible exposures. The names North Boulder Group and East Gallatin Group should be abandoned. The LaHood represents a long time-stratigraphic interval...
Image
Elk Basin anticline A–A′ cross section and retrodeformed section (to time o...
Published: 01 April 2016
M , Mississippian Madison Formation. C G , Cambrian Gallatin Group. Note no observable offset on the thrust beneath the Elk Basin at the time of deposition of the Eagle Formation (green line).
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1941
AAPG Bulletin (1941) 25 (9): 1729–1744.
...° the thickness is 450 feet. Gallatin limestone .—The Gallatin conformably overlies the Gros Ventre. It is dark blue thin-bedded dense fossiliferous limestone with some calcite veining. At the base there is a 5-8-foot bed of edgewise pebble conglomerate, which has pebbles covered with glauconite. Shells...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1947
AAPG Bulletin (1947) 31 (2): 274–281.
... limestone, shaly limestone, and gray and purple shale. Although Johnson 6 included all the cliff-forming dolomites between his Gallatin and Three Forks in his Bighorn dolomite, he described a single occurrence of reddish limestone at the top of his Bighorn which yielded no fossils, “but probably...
FIGURES
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 December 2015
Lithosphere (2015) 7 (6): 625–645.
... in several biotite samples from the Gallatin Canyon localities, which called into question the exact position and nature of the thermal transition in the Northern Madison Range. The spatial extent and magnitude of this late Paleoproterozoic thermotectonism remain unclear. Previous workers linked...
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Journal Article
Published: 01 December 1979
Bulletin of the Seismological Society of America (1979) 69 (6): 1917–1929.
..., Jefferson, Broadwater, Madison, and Gallatin Counties, Montana , U.S. Geol. Surv. Geophys. Investigations, Map GP-497 . Davis W. E. Kinoshita W. T. Robinson...
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1941
AAPG Bulletin (1941) 25 (1): 120–151.
... and valleys paralleling the axis of the range. Columnar structures near the middle of the Gallatin have been found in many places along the northeast flank of the mountains. They seem to be near the same horizon in all of the places studied. They probably originated through mud cracking, differential...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1950
AAPG Bulletin (1950) 34 (11): 2200–2222.
... of the Cambrian Gallatin formation. In 1899 Weed used the same name for an Upper Cambrian formation which he defined from the Little Belt Mountains of central Montana, and subsequently the name has been used for a supposed Upper Cambrian formation at or near the top of the Upper Cambrian sequence of central...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1951
AAPG Bulletin (1951) 35 (10): 2135–2169.
... the phosphate deposits. These men were of invaluable assistance in the location, measuring, and interpretation of stratigraphic sections. Particular thanks are due to George Kennedy, G. Bradley Myers, Montis R. Klepper, and Wayne Lowell. Many of the data in Gallatin County and the Madison Range were gathered...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1940
AAPG Bulletin (1940) 24 (2): 209–224.
... was probably half of this. Uplift, warping, and peneplanation previous to the deposition of Pennsylvanian sediments caused truncation of the series throughout the basin and scalping of local structures. The isopach map indicates two major pre-Pennsylvanian anticlinal areas in which are located a large...
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Journal Article
Journal: AAPG Bulletin
Published: 01 February 1981
AAPG Bulletin (1981) 65 (2): 291–302.
... and surficial deposits. In the Three Forks area Robinson (1963) estimated the maximum aggregate thickness for the Tertiary to be about 3,000 ft (900 m), but noted that the total local thickness is probably no more than 2,500 ft (760 m) and is generally less than 1,000 ft (300 m). Tertiary strata near Townsend...
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Journal Article
Published: 01 January 2023
The Journal of Geology (2023) 131 (1): 75–95.
...) is exposed to the west, north, and east. Young volcanics from the Yellowstone igneous center (Huckleberry Ridge Tuff) are exposed to the south. Immediately to the east of Lone Mountain, across the Gallatin River in the Gallatin Range ( fig. 1 ), Chadwick ( 1970 ) identified units of the AVF that consists...
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