Typhoon; 309 pages; Pocket Star Books, 1992; Mark Joseph; 1992

Typhoon; 309 pages; Pocket Star Books, 1992; Mark Joseph; 1992 Mg isotopic anomalies in the Allende meteorite and correlation with O and Sr effects, mg isotopic anomalies were determined on inclusions in the Allende meteorite. Measured Mg isotopic ratios were corrected for mass fractionation by normalizing to the terrestrial (normal) 25 Mg/24 Mg. Relative to normal Mg, Allende samples show distinct isotopic. Dust: A diagnostic of the hydrologic cycle during the Last Glacial Maximum, dust concentrations in ice of the last glacial maximum (LGM) are high in ice cores from Greenland and Antarctica. The magnitude of the enhancements can be explained if the strength of the hydrologic cycle during the LGM was about half of that at present. This notion. A double island arc between Taiwan and Luzon: consequence of ridge subduction, abstract Analysis of geomorphological, geochronological, geochemical and geophysical features in the segment of the Taiwan-Luzon Arc between Taiwan and Luzon (the Bashi Segment) allows the recognition of a double arc structure. The two volcanic chains. Miocene basalts in northwestern Taiwan: evidence for EM-type mantle sources in the continental lithosphere, cenozoic extension around the Taiwan Strait resulted in intraplate basalt volcanism in the Fujian-Taiwan region of the southeastern China continental margin. In northwestern Taiwan, the basalt volcanism took place in two distinct periods: the early Miocene (23-20 Ma), with. Toward an astrophysical theory of chondrites, the chondrules, calcium-aluminum-rich inclusions (CAIs), and rims in chondritic meteorites could be formed when solid bodies are lifted by the aerodynamic drag of a magnetocentrifugally driven wind out of the relative cool of a shaded disk close to the star. The origin of chondrules and refractory inclusions in chondritic meteorites, examples of calcium-aluminum-rich inclusions (CAIs) surrounded by thick chondrule mantles have been found in chondritic meteorites and cast doubt on the conventional belief that CAIs and chondrules possessed different spacetime origins in the primitive solar. X-rays and fluctuating X-winds from protostars, protostars emit more x-rays, hard and soft, than young sunlike stars in more advanced stages of formation. The x-ray emission becomes harder and stronger during flares. The excess x-rays may arise as a result of the time-dependent interaction of an accretion disk. The calibration of D [Sr/Ca] versus sea surface temperature relationship for Porites corals, taking advantage of the availability of a continuous sea surface temperature (SST) record at Kenting, southern Taiwan, we have carried out a calibration of D [Sr/Ca]-SST (D: distribution coefficient) relationships for Porites lobata and P. lutea. Between 22° C∼ 28° C, the best. Correlated O and Mg isotopic anomalies in Allende inclusions: II. Magnesium, abstract Mg in two Allende Ca-Al rich inclusions shows large isotopic, mass-dependent fractionation which enriched the heavier isotopes. After normalization, Mg in these inclusions shows negative δ 26 Mg which appears to require the presence of nuclear effects. Protostellar cosmic rays and extinct radioactivities in meteorites, calcium-aluminum-rich inclusions (CAIs) and chondrules of chondritic meteorites may originate with the melting of dustballs launched by a magnetically driven bipolar outflow from the inner edge of the primitive solar nebula. Bombardment by protostellar cosmic rays. Calcium isotopic anomalies in the Allende meteorite, we report isotopic anomalies in Ca which were found in two Ca-Al-rich inclusions of the Allende. Calcium isotopic anomalies and the lack of aluminum-26 in an unusual Allende inclusion, 39, ed. AH Delsemme (Toledo: University of Toledo Press), p. 343 (PLW). Rayleigh, 3. WS 1896, Phil. Mag., 42, 493. Russell, WA, Papanastassiou, DA, and Tombrello, TA 1978, Geochim. Cosmochim. Acta, 42, 1075 (RPT). Schranmv, DN, Tera, F.. and Wasserburg, GJ 1970, Earth. Correction [to Demonstration of 26Mg excess in Allende and evidence for 26Al, abstract. We report the discovery of a large anomaly in the isotopic composition of Mg in a Ca-AI rich chondrule from the Allende meteorite. This ano⠢naly is manifest independently of instrumental fractionation and is due to an enrichment of about 1.3 percent in 26Mg while the abundances. The partition of Be between soil and water, an extensive and systematic investigation of Be partition between solid and water was carried out using laboratory batch experiments with radioactive 7 Be tracer. We found that:(1) Be is strongly held by the solid particles in natural environments under neutral. Aluminum-26 in the early solar system-Fossil or fuel, all rights reserved. Printed in USA ALUMINT]M-26 IN THE EARLY SOLAR SYSTEM : FOSSIL OR FUEL? TYPHOON LEE, DA PAPANASTASSIOTJ, AND GJ WASSERBURG The Lunatic Asylum, Division of Geological and Planetary Sciences,* California Institute of Technology. A local proton irradiation model for isotopic anomalies in the solar system, all rights reserved. Printed in USA A LOCAL PROTON IRRADIATION MODEL FOR ISOTOPIC ANOMALIES IN THE SOLAR SYSTEM TYPHOON LEE The Lunatic Asylum of the Charles Arms Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology. Chemical composition of HAL, an isotopically-unusual Allende inclusion, thirty-seven major, minor and trace elements were determined by INAA and RNAA in samples of hibonite, black rim and portions of friable rim from an unusual Allende inclusion, HAL. The peculiar isotopic, mineralogical and textural properties of HAL are accompanied. Geochemistry of mud volcano fluids in the Taiwan accretionary prism, taiwan is located at the collision boundary between the Philippine Sea Plate and the Asian Continental Plate and is one of the most active orogenic belts in the world. Fluids sampled from 9 sub-aerial mud volcanoes distributed along two major geological structures. Extinct radioactivities and protosolar cosmic rays: Self-shielding and light elements, we study the effects of self-shielding in the X-wind model of protosolar cosmicray irradiation of early solar-system rocks. We adopt a two-component picture of protoCAIs consisting of cores with the elemental abundances of type B1 CAIs (calcium-aluminum-rich inclusions. New isotopic clues to solar system formation, the presence of two new extinct nuclides 26 Al and 107 Pd with half-lives∼ 10 6 years in the early solar system implies that there were nucleosynthetic activities involving a great many elements almost at the instant of solar system formation. Rare gas and oxygen isotopic.