Geoscienceworld - geosphere.geoscienceworld.org - Geosphere current issue

Latest News:

The 36-18 Ma Indian Peak-Caliente ignimbrite field and calderas, southeastern Great Basin, USA: Multicyclic super-eruptions 1 Aug 2013 | 08:20 pm

The Indian Peak–Caliente caldera complex and its surrounding ignimbrite field were a major focus of explosive silicic activity in the eastern sector of the subduction-related southern Great Basin igni...

Magmatism, ash-flow tuffs, and calderas of the ignimbrite flareup in the western Nevada volcanic field, Great Basin, USA 1 Aug 2013 | 08:20 pm

The western Nevada volcanic field is the western third of a belt of calderas through Nevada and western Utah. Twenty-three calderas and their caldera-forming tuffs are reasonably well identified in th...

Fresh-water and salt-water distribution in passive margin sediments: Insights from Integrated Ocean Drilling Program Expedition 313 on the New Jersey ... 1 Aug 2013 | 08:20 pm

On the New Jersey shelf (offshore North America), the presence of pore water fresher than seawater is known from a series of boreholes completed during the 1970s and 1980s. To account for this fresh w...

Statistical classification of log response as an indicator of facies variation during changes in sea level: Integrated Ocean Drilling Program Expediti... 1 Aug 2013 | 08:20 pm

In this study, a novel application of a statistical approach is utilized for analysis of downhole logging data from Miocene-aged siliciclastic shelf sediments on the New Jersey Margin (eastern USA). A...

Upper crustal structure of Alabama from regional magnetic and gravity data: Using geology to interpret geophysics, and vice versa 1 Aug 2013 | 08:20 pm

Aeromagnetic and gravity data sets obtained for Alabama (United States) have been digitally merged and filtered to enhance upper-crustal anomalies. Beneath the Appalachian Basin in northwestern Alabam...

Paleoseismic history of the Fallen Leaf segment of the West Tahoe-Dollar Point fault reconstructed from slide deposits in the Lake Tahoe Basin, Califo... 1 Aug 2013 | 08:20 pm

The West Tahoe–Dollar Point fault (WTDPF) extends along the western margin of the Lake Tahoe Basin (northern Sierra Nevada, western United States) and is characterized as its most hazardous fault. Fal...

Structural inheritance and erosional controls on thrust kinematics in western Taiwan 1 Aug 2013 | 08:20 pm

Late Quaternary shortening along the length of the Western Foothills of Taiwan highlights the tectonic segmentation of the foreland and raises questions about the relationship between erosion and the ...

Intrusive history and petrogenesis of the Ash Mountain Complex, Sierra Nevada batholith, California (USA) 1 Aug 2013 | 08:20 pm

The Ash Mountain Complex (AMC) in the western Sierra Nevada batholith (SNB; California, USA) is an exposure of six compositionally diverse intrusive lithologies with clear crosscutting relationships t...

The Goldstein Peak Formation, central California: Record of a nonmarine intra-arc basin within the Early Cretaceous Sierra Nevada arc 1 Aug 2013 | 08:20 pm

New mapping in the Lake Kaweah pendant of the southwestern Sierra Nevada batholith reveals a previously unrecognized nonmarine sequence of metamorphosed sedimentary and volcanic strata, defined herein...

Sierra Crest graben-vent system: A Walker Lane pull apart within the ancestral Cascades arc 1 Aug 2013 | 08:20 pm

We show here that transtensional rifting along the eastern boundary of the Sierra Nevada microplate (Walker Lane rift) began by ca. 12 Ma in the central Sierra Nevada (USA), within the ancestral Casca...

Recently parsed news:

Recent searches: