High-latitude cold-based glacial deposits on Mars: Multiple superposed drop moraines in a crater interior at 70°N latitude

High-latitude cold-based glacial deposits on Mars: Multiple superposed drop moraines in a crater interior at 70°N latitude

available online at http://meteoritics.org 1659 © The Meteoritical Society, 2006. Printed in USA. High-latitude cold-based glacial deposits on Mars: Multiple superposed drop moraines in a crater interior at 70°N latitude James B. GARVIN1, James W. HEAD2*, David R. MARCHANT3, and Mikhail A. KRESLAVSKY2, 4 1National Aeronautics and Space Administration Headquarters, Washington, D.C. 20546, USA 2D...

Glacial Landsystems on Mars: Integrating Landform Assemblages, Glaciations, and Cli- Mate Cycles

Introduction: The strong geomorphic similarities between lobate deposits 1) on the northwest flank of the Tharsis Montes [1,2] and 2) along the dichotomy boundary between 30° and 50° [3] with terrestrial cold-based glaciers and glacial deposits has led to hypotheses for geologically recent (Amazonian-age) low and mid-latitude glaciation on Mars [1,4]. The key to these studies has been to identi...

High Latitude Corals Tolerate Severe Cold Spell

Climatically extreme weather events often drive long-term ecological responses of ecosystems. By disrupting the important symbiosis with zooxanthellae, Marine Cold Spells (MCS) can cause bleaching and mortality in tropical and subtropical scleractinian corals. Here we report on the effects of a severe MCS on high latitude corals, where we expected to find bleaching and mortality. The MCS took p...

Korolev Crater, Mars: Characteristics and Origin of Volatile-rich Deposits in the Crater Interior:

Gasa impact crater, Mars: Very young gullies formed from impact into latitude-dependent mantle and debris-covered glacier deposits?

The mode of formation of gullies on Mars, very young erosional–depositional landforms consisting of an alcove, channel, and fan, is one of the most enigmatic problems in martian geomorphology. Major questions center on their ages, geographic and stratigraphic associations, relation to recent ice ages, and, if formed by flowing water, the sources of the water to cause the observed erosion/deposi...