Recent Advances (2008-2015) in the Study of Ground Ice and Cryostratigraphy

摘要: Cryostratigraphy involves the description, interpretation and correlation of ground-ice structures (cryostructures) their relationship to host deposits. Recent advances in study ground ice cryostratigraphy concern permafrost aggradation degradation, massive-ice formation evaluation content. Field studies have increased our knowledge cryostructures massive epigenetic syngenetic permafrost. Epigenetic deposits are relatively ice-poor composed primarily pore-filled cryostructures, apart from an ice-enriched upper section intermediate layer. Syngenetic commonly identified indicative aggrading table characterised by a high content, ice-rich cryofacies nested wedge ice. Degradation can be marked thaw unconformities, truncated buried wedges, ice-wedge pseudomorphs organic-rich ‘forest beds’. Studies focused on ice, thermokarst-cave intrusive Significant been made methods for differentiating between tabular bodies glacier intrasedimental origin. utilised palynology, isotope geochemistry hydrochemistry, addition sedimentary cryostratigraphic analyses. The application remote sensing techniques laboratory such as computed tomography scanning has improved estimations content frozen sediments. Copyright © 2016 John Wiley & Sons, Ltd.