نتایج جستجو برای: volcanic belt

تعداد نتایج: 31742  

2003
YI YAN GE LIN YUE-JUN WANG FENG GUO ZI-AN LI XIAO-MING LI CHONGBIN ZHAO

The apatite fission track (FT) analysis of Jurassic sandstones from the Beipiao basin in the eastern China indicates a large variation in FT age peaks. The sandstone of the Beipiao Formation has two peak ages at 178.8 and 40.0 Ma, while the sandstone of the Tuchengzi Formation has three age peaks at 152.0, 77.5 and 32.5 Ma. This implies that the provenance of the Beipiao basin in the early Jura...

2017
Shinji Takarada

Volcanic hazards assessment tools are essential for risk mitigation of volcanic activities. A number of offline volcanic hazard assessment tools have been provided, but in most cases, they require relatively complex installation procedure and usage. This situation causes limited usage of volcanic hazard assessment tools among volcanologists and volcanic hazards communities. In addition, volcani...

2001
Steve Israel

The Bonaparte project is a new multi-year bedrock mapping program of the British Columbia Geological Survey (BCGS) concentrating on Mesozoic arc volcanic and plutonic rocks of the Quesnel Terrane in the northeastern part of the Bonaparte Lake (92P) map sheet (Figure 1). The area encompasses a northwest-trending belt of high mineral potential that includes a number of interesting mineral occurre...

2005
J. Bruce H. Shyu Kerry Sieh Yue-Gau Chen Char-Shine Liu

[1] The disastrous effects of the 1999 Chi-Chi earthquake in Taiwan demonstrated an urgent need for better knowledge of the island’s potential earthquake sources. Toward this end, we have prepared a neotectonic map of Taiwan. The map and related cross sections are based upon structural and geomorphic expression of active faults and folds both in the field and on shaded relief maps prepared from...

2003
Joseph M. English Stephen T. Johnston Kelin Wang

The Laramide orogeny is the Late Cretaceous to Palaeocene (80^55 Ma) orogenic event that gave rise to the Rocky Mountain fold and thrust belt in Canada, the Laramide block uplifts in the USA, and the Sierra Madre Oriental fold and thrust belt in Mexico. The leading model for driving Laramide orogenesis in the USA is flat-slab subduction, whereby stress coupling of a subhorizontal oceanic slab t...

Journal: :Acta Geologica Polonica 2023

During the late Oligocene to early Miocene residual Magura Basin was located along front of Pieniny Klippen Belt (PKB). This basin supplied with clastic material derived from a south-eastern direction. In Male (Little) Mts. in Poland, Oligocene/ Kremna Fm. Nappe (Krynica subunit) occurs both PKB as well tectonic windows within PKB. Lenses exotic conglomerates contain frequent clasts Mesozoic li...

Journal: :Accident; analysis and prevention 2009
Joseph O'Neil Dawn M Daniels Judith L Talty Marilyn J Bull

OBJECTIVE Observe and report seat belt use among children transported in belt-positioning booster seats. DESIGN We conducted a cross-sectional, observational survey of children transported in motor vehicles between 2006 and 2007. While drivers completed a survey reporting the child's age, weight and gender, and the driver's age, gender, race, income, education, and relationship to the child; ...

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