Volcán de Colima is a highly active stratovolcano at the western end of Trans-Mexican Volcanic Belt. Present-day activity consists lava dome growth and destruction cycles, flows, small explosions, larger explosive Vulcanian eruptions. It has been postulated that an increased frequency more mafic eruptions signals run-up to c. 100-year eruptive ‘cycles’, terminating with Plinian eruption such as...

Large carnivores are some of the world’s most difficult species to conserve because of their large spatial requirements, low population density, and high potential for conflict with humans. However, large carnivores are valuable for ecological, cultural, and ethical reasons. Carnivore management can take a wide variety of forms, including translocation, sterilization, livestock compensation pro...

BACKGROUND Context and purpose of the study. To examine (1) associations between county-level zoning to support farmers' market placement and county-level farmers' market availability, rural/urban designation, percent African American residents, and percent of residents living below poverty and (2) individual-level associations between zoning to support farmers' markets; fruit and vegetable con...

The African-Antarctic sector of the Southern Ocean is least studied part World Ocean, structure and evolution tectonosphere which remains debatable. complex history development region under study, accompanied by manifestations intense magmatic tectonic activity, has contributed to formation a number large underwater ridges rises. Identifying features deep on basis analysis geophysical informati...

Granitic rocks related to 1.18 to 1.13 Ga anorthosite-mangerite-charnockitegranite plutonism stitch three terranes in the southwestern Grenville Province (Adirondack Highlands–Morin terrane, Frontenac terrane, Elzevir terrane). Because of the refractory nature of zircon (Zrn), analysis of oxygen-isotope ratios of dated igneous zircon from these rocks allows calculation of δ18O values of origina...

There has been an increasing focus on exclusionary zoning; particularly in suburban areas, as a cause of the high house prices in many metropolitan areas in the United States. Most of the recent evidence, though, is indirect given the difficulty of isolating the direct causal impact of zoning on house prices. One main problem to overcome is that zoning is not exogenous but is rather the result ...

Considerable prior analysis has gone into the study of zoning restrictions on locational choice and on fiscal burdens, but none addresses the level and distribution of public goods provided under fiscal zoning. Our analysis emphasizes the interplay between land use restrictions and public good provision, focusing on schooling outcomes. We extend existing general equilibrium models of location a...

Many health studies use aggregate data such as the means or totals for areal units or zones when individual level data are not available. An ecological analysis using these data typically produces estimates that differ from those obtained using the corresponding individual level analysis. This is due to the modifiable area unit problem (MAUP) whereby the results of the analysis depend on the sc...

In the Variscan Western Tatra granites hybridization phenomena such as mixing and mingling can be observed at the contact of mafic precursors of dioritic composition and more felsic granitic host rocks. The textural evidence of hybridization include: plagioclase-K-feldspar-sphene ocelli, hornblende- and biotite-rimmed quartz ocelli, plagioclase with Ca-rich spike zonation, inversely zoned K-fel...

The dCorg values of Phanerozoic black shales average227&, whereas those of modern marine organic matter average220&. The black shale isotopic values mimic those of continental organic matter, yet their organic geochemical properties mandate that they contain predominantly marine organic matter. Hypotheses that proposed to explain the low dC values of black shales include diagenetic losses of is...