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In geology, tectonostratigraphy refers either to rock sequences in which large-scale layering is caused by the stacking of thrust sheets or nappes in areas of thrust tectonics or the effects of tectonics on lithostratigraphy. ==Tectonically formed stratigraphy== One example of such a tectonostratigraphy is the Scandinavian Caledonides.〔Roberts,D. & Gee,D. 1985. An introduction to the structure of the Scandinavian Caledonides. In Gee, D. G., and Sturt, B. A., eds. The Caledonide Orogen - Scandinavia and related areas.John Wiley and Sons, Chichester, 55-68.〕 Within the entire exposed 1800 km length of this orogenic belt the following sequence is recognised from the base upwards: * Autochthon : undisturbed foreland of the Baltic plate * Parautochthon : thrust sheets that have moved only a short distance (up to 10s of km) from their original position * Lower allochthon : far travelled thrust sheets derived from the Baltic plate passive margin, mainly sediments associated with the break-up of Rodinia * Middle allochthon : also derived from the margin of the Baltic plate, Proterozoic basement and its psammitic cover * Upper allochthon : thrust sheets including island arc and ophiolitic sequences * Uppermost allochthon : thrust sheets containing sediments with fossil assemblages indicating an origin on the margin of the Laurentian plate This vertically stacked sequence thus represents the passive margins of Baltica and Laurentia and intervening island arcs and back-arc basins telescoped together and emplaced on top of the Baltic Shield, involving hundreds of km of shortening. Within this overall stratigraphy the individual layers have their own tectonostratigraphy of stacked thrust sheets. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tectonostratigraphy」の詳細全文を読む スポンサード リンク
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