کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5487266 1523508 2017 52 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Geological mapping of impact melt deposits at lunar complex craters Jackson and Tycho: Morphologic and topographic diversity and relation to the cratering process
ترجمه فارسی عنوان
نقشه برداری زمین شناسی رسوبات ذوب در گودال های مجتمع قمر جکسون و تیچو: تنوع مورفولوژیکی و توپوگرافی و رابطه آن با فرایند کاترینگ
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم فضا و نجوم
چکیده انگلیسی
High resolution geological mapping, aided by imagery and elevation data from the lunar reconnaissance orbiter (LRO) and Kaguya missions, has revealed the scientifically rich character of impact melt deposits at two young complex craters: Jackson (71 km) and Tycho (85 km). The morphology and distribution of mapped impact melt units provide several insights into the cratering process. We report elevation differences (>200 m) among large, coherent floor sections within a single crater and interpret them to be caused by crater wall collapse and/or large scale structural failure of the floor region. Clast-poor, smooth melt deposits are correlated with floor sections at lower elevations and likely represent ponded deposits sourced from higher elevation regions (viz. crater walls). In addition, these deposits are also located in the inferred downrange direction of the impact. Melt-coated large blocks spanning several kilometers are common on the crater floors and may represent collapsed wall sections or in some cases, subdued sections of the central peaks. Spatial trends in the mapped impact melt units at the two craters provide clues to decipher the conditions during each impact event and subsequent evolution of the crater floor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 283, February 2017, Pages 268-281
نویسندگان
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