نتایج جستجو برای: melange

تعداد نتایج: 188  

2003
Paul Kapp An Yin Craig E. Manning T. Mark Harrison Michael H. Taylor Lin Ding Shuang Hu

[1] A >500-km-long east-west trending metamorphic belt in the Qiangtang terrane of central Tibet consists of tectonic melange that occurs in the footwalls of Late Triassic–Early Jurassic domal low-angle normal faults. The melange is comprised of a strongly deformed matrix of metasedimentary and mafic schists that encloses lesser-deformed blocks of metabasites, Carboniferous–Triassic metasedimen...

2012
Jacob I. WALTER Jason E. BOX Slawek TULACZYK Emily E. BRODSKY Ian M. HOWAT Yushin AHN Abel BROWN

Dynamics of marine-terminating major outlet glaciers are of high interest because of their potential for drawing down large areas of the Greenland ice sheet. We quantify short-term changes in ice flow speed and calving at a major West Greenland glacier and examine their relationship to the presence of the sea-ice melange and tidal stage. A field campaign at the terminus of Store Gletscher (70.4...

2003
Paul Kapp Michael A. Murphy An Yin Mark Harrison Lin Ding Jinghu Guo

[1] In the Shiquanhe area of far-western Tibet, midCretaceous strata lie unconformable on ophiolitic melange and Jurassic flysch associated with the Bangong-Nujiang suture zone. On the basis of our mapping and geochronologic studies, we suggest that these Cretaceous strata were shortened by >57% over a north south distance of 50 km during Late Cretaceousearly Tertiary time. The Late Cretaceous ...

Journal: :Doklady Earth Sciences 2021

It is shown that the giant Sikhote-Alin and Pamir deposits of boron are associated with fragments boron-bearing evaporite strata paleoceanic atolls in subduction melange. Ore formation relates both to situ transformation at Ak-Arkhar deposit mobilization redeposition some distance away from source course intensive post-accretionary fluid-magmatic reworking melange Dalnegorskoe deposit.

2015
Denis VOYTENKO Alon STERN David M. HOLLAND Timothy H. DIXON Knut CHRISTIANSON Ryan T. WALKER Denis Voytenko

We used a terrestrial radar interferometer (TRI) at Helheim Glacier, Greenland, in August 2013, to study the effects of tidal forcing on the terminal zone of this tidewater glacier. During our study period, the glacier velocity was up to 25md. Our measurements show that the glacier moves out of phase with the semi-diurnal tides and the densely packed melange in the fjord. Here detrended glacier...

2012
J. Saleeby

The Kings-Kaweah ophiolite belt of the southwestern Sierra Nevada Foothills was generated in two pulses of mid-oceanic-ridge basalt (MORB) magmatism. The first was in the Early Ordovician, which resulted in the generation of a complete abyssal crust and upper mantle section. The crustal section was rendered from convecting mantle whose Nd, Sr, and Pb isotopic systematics lie at the extreme end ...

2005
Lin Ding Paul Kapp Xiaoqiao Wan

[1] Uppermost Cretaceous to Eocene marine sedimentary sequences occur both to the south and north of the Yarlung Zangbo suture in south central Tibet. They consist of Indian-margin strata of the northern Tethyan Himalaya and Asian-margin strata of the Gangdese forearc. Both assemblages are characterized by major changes in depositional environment and sedimentary provenance at 65 Ma and an appe...

Journal: :The Astronomical Journal 2022

Abstract Young planets provide a window into the early stages and evolution of planetary systems. Ideal for such research are in coeval associations, where parent population can precisely determine their ages. We describe young association (MELANGE-3) Kepler field, which harbors two transiting systems (KOI-3876 Kepler-970). identify MELANGE-3 by searching kinematic spatial overdensities around ...

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