... relations and 40 Ar/ 39 Ar geochronology bracket the dike ages between 90 and 84 Ma. Diabase dikes in the York Mountains are associated with normal faults that strike east–west to east-northeast. Dikes in the Bendeleben Mountains are both mafic and felsic, but their orientations are unknown. Alkalic dikes...

...Figure 2 Simplified geologic map of Seward Peninsula, showing location of the York Mountains (YM), Kigluaik Mountains (KM), Bendeleben Mountains (BM), Darby Mountains (DM), and Cape Nome (CN). The analyzed samples are also shown; see Table 1 for sample list. Geology is after Beikman (1980...

...Figure 6. Simplified geologic map of the Seward Peninsula, modified from Till et al. (2011) . Location and orientation of folds of foliation within the Nome Complex are shown. Plutonic rocks, which are most voluminous in the Kigluaik, Bendeleben, and Darby Mountain ranges, are not shown...

... Mountain, and traverses the epicentral area of the 1950 earthquake (m~ = 6.5). About 75 to 100 km to the west of this zone, a second trend in seismicity (I-I) cuts across the Bendeleben-Kigluaik mountain 173 ° 165 o 69 ° 69 ° '~ ANTICLINE SYNCLINE THRUST FAULT NORMAL FAULT FAULT TRACE RIDGE AND BASIN AXIS...

... field studies. Multipurpose geologic mapping and field studies were conducted throughout the State, including southeastern Alaska in the Craig, Ketchikan, and Juneau areas; in southern Alaska in the Chugach Mountains and Prince William Sound area; in central Alaska in the Wrangell Mountains, eastern...

... and then divided by total length of all faults. Circle in each diagram represents 10% of that total length. The most evident high-angle faults on the Seward Peninsula are two major normal faults that strike nearly east and bound the Kigluaik and Bendeleben Mountains ( Fig. 1 ; Hudson and Plafker, 1978...

... of granitoids from an uplifted fault block in the Bendeleben Mountains that they also ascribe to extensional faulting, offshore basin development, and erosion. Both Dumitru et al. (1995) and McDannell et al. (2014) propose that Paleogene extension, exhumation, and block rotation induced by tectonic...

... geologic mapping to provide a basis for the interpretation of geochemical anomalies. Continuing metal resource investigations that functioned in 1969 included the Hogatza trend, Seward Peninsula, southwest Alaska, central, southern and eastern Alaska Range, Talkeetna Mountains, Yukon-Tanana, Livengood...

...., 2014 ). Traverses, geologic mapping, and sampling were carried out in the Mount Distin area ( Fig. 3 ), southwest of upper Salmon Lake ( Fig. 4 ), and the Anvil Mountain–Newton Peak area just north of Nome ( Fig. 5 ). We found similar lithologic units, structural relations, and lithologic interlayering...

... these beds on the continental slope north of Barrow. Field studies were continued in the several mineralized districts of Alaska, including geologic mapping at a scale of 1:63,360 in the Prince of Wales Island region, Talkeetna Mountains, Western Chugach Mountains, Wrangell Mountains, eastern Alaska...

... the subject of extensive discussion and speculation for many years. Since the early work of Mertie (1930c) the structural grain as delineated by major faults, axes of mountain ranges, and trends of outcrops has been used as a basis for conjecture ( Payne, 1955 ; Gates and Gryc, 1963 ; Grantz, 1966...

... . Geological Society of America . doi: 10.1130/2022.1220(30) . McDannell , K.T. 2011 . Exhumation in the Bendeleben Mountains (Seward Peninsula, Alaska) constrained by (U–Th)/He thermochronology. M.S. Thesis , University of West Virginia , Morgantown, WV . McElhinny , M.W. 1964...

..., and fine-grained clastic sedimentary strata of Ordovician through Mississippian age that deposited in a shallow-water platform environment. The York section bears similarities in lithofacies and biofacies to the metacarbonate sequence of the Baird Mountains in the western Brooks Range 300 km...

... constraints on Late Cretaceous to Cenozoic exhumation of the Bendeleben Mountains, Seward Peninsula, Alaska . Geochem. Geophys. Geosyst. 15 , 4009 – 4023 , doi: https://doi.org/10.1002/2014GC005424 . McWhae , J.R. , 1986 . Tectonic history...

... Mountains allochthon, which is characterized by thick siliciclastic strata of Devonian–Mississippian age ( Mayfield et al., 1988 ; Moore et al., 1994 ; Dumoulin et al., 2004 ). The next highest sheet is the Picnic Creek allochthon, which includes Carboniferous rocks representative of deep-water facies...