DOI: 10.1016/j.quascirev.2014.01.001
Scopus记录号: 2-s2.0-84893368074
论文题名: Tuyas: A descriptive genetic classification
作者: Russell J.K. ; Edwards B.R. ; Porritt L. ; Ryane C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 87 起始页码: 70
结束页码: 81
语种: 英语
英文关键词: Canada
; Classification
; Glacialhydraulics
; Glaciovolcanism
; Iceland
; Paleo-environment
; Passage zone
; Physical volcanology
; Pillow lava
; Subglacial volcanoes
; Tindar
; Tuya
Scopus关键词: Canada
; Glacialhydraulics
; Glaciovolcanism
; Icelands
; Paleo-environment
; Physical volcanology
; Pillow lavas
; Tindar
; Tuya
; Classification (of information)
; Genes
; Morphology
; Terminology
; Volcanoes
; Buildings
; genetic analysis
; lithofacies
; morphology
; nomenclature
; paleoenvironment
; volcanic eruption
; volcano
英文摘要: We present a descriptive genetic classification scheme and accompanying nomenclature for glaciovolcanic edifices herein defined as tuyas: positive-relief volcanoes having a morphology resulting from ice confinement during eruption and comprising a set of lithofacies reflecting direct interaction between magma and ice/melt water. The combinations of lithofacies within tuyas record the interplay between volcanic eruption and the attending glaciohydraulic conditions. Although tuyas can range in composition from basaltic to rhyolitic, many of the characteristics diagnostic of glaciovolcanic environments are largely independent of lava composition (e.g., edifice morphology, columnar jointing patterns, glass distributions, pyroclast shapes). Our classification consolidates the diverse nomenclature resulting from early, isolated contributions of geoscientists working mainly in Iceland and Canada and the nomenclature that has developed subsequently over the past 30 years. Tuya subtypes are first recognized on the basis of variations in edifice-scale morphologies (e.g., flat-topped tuya) then, on the proportions of the essential lithofacies (e.g., lava-dominated flat-topped tuya), and lastly on magma composition (e.g., basaltic, lava-dominated, flat-topped tuya). These descriptive modifiers potentially supply additional genetic information and we show how the combination of edifice morphologies and lithofacies can be directly linked to general glaciohydraulic conditions. We identify nine distinct glaciovolcanic model edifices that potentially result from the interplay between volcanism and glaciohydrology. Detailed studies of tuya types are critical for recovering paleo-environmental information through geological time, including: ice sheet locations, extents, thicknesses, and glaciohydraulics. Such paleo-environmental information represents a new, innovative, underutilized resource for constraining global paleoclimate models. © 2014 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60376
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: Volcanology and Petrology Laboratory, Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver V6T 1Z4, Canada; Department of Earth Sciences, Dickinson College, Carlisle, PA 17013, United States; School of Earth Sciences, University of Bristol, Bristol, United Kingdom
Recommended Citation:
Russell J.K.,Edwards B.R.,Porritt L.,et al. Tuyas: A descriptive genetic classification[J]. Quaternary Science Reviews,2014-01-01,87