Introduction: The Mars Exploration Rover Opportunity has traversed more than 13 km across Meridiani Planum, finding evidence of ancient aqueous environments that, in the past, may have been suitable for life. Meridiani bedrock along the rover traverse is a mixture in composition and bulk mineralogy between a sulfate-rich sedimentary rock and hematite spherules (" blueberries ") [1]. On top of t...

Variation in beta dose rate within rocks may impact the results of rock surface luminescence dating, for both burial age cobbles and exposure surfaces. Current methods dating assume that radionuclides are homogeneously distributed inside rocks. In this study, two rapid based on counting a portable XRF instrument were developed to measure radioactivity slices. These applied slices from four glac...

Species rich benthic communities have been reported from some seamounts, predominantly from the Atlantic and Pacific Oceans, but the fauna and habitats on Indian Ocean seamounts are still poorly known. This study focuses on two seamounts, a submarine volcano (cratered seamount--CSM) and a non-volcano (SM2) in the Andaman Back-arc Basin (ABB), and the basin itself. The main purpose was to explor...

Cobbles and boulders on the seafloor are of high ecological value in their function as habitats for a variety benthic species, contributing to biodiversity productivity marine environments. We investigate origin, physical shape, structure habitat-forming cobbles reflect dynamics coastal environments southwestern Baltic Sea. Stone not limited lag deposits cannot be sufficiently described static ...

The most distinctive feature of the Upper Triassic (Carnian) Quaco Formation, coastal New Brunswick, Canada, is the pervasive occurrence of cm-scale circular to elliptical markings and indentations on the cobble surfaces. Also present on many of the cobbles are fractures that radiate from these indentations and spalled clast margins. The smooth-surfaced depressions that occur on most cobbles li...

Abstract The behavior of the Greenland Ice Sheet during Pleistocene remains uncertain due to paucity evidence predating Last Glacial Maximum. Here, we employ a novel approach, cosmogenic nuclide analysis individual subglacially-derived cobbles, which allows us make inferences about ice sheet processes and subglacial erosion. From three locations in western Greenland, collected 86 cobbles from c...

[1] The October 1999 Mw 7.1 Hector Mine earthquake in the Mojave Desert, California, generated characteristic surface disturbances on nearby desert pavements. These disturbances included (1) zones of wholesale gravel displacement interspersed with zones of intact pavement, (2) displaced and rotated cobbles, (3) moats around loosened, embedded boulders, (4) filling of abandoned cobble sockets, b...