古地理重建是研究地质历史时期地表构造过程、海陆格局和地貌环境特征的一项综合研究,并通过绘制表达海洋和大陆的古代轮廓以及重要的地形和地表环境的地图来呈现,是还原地球演化历史、预测能源矿产分布、认识生命和气候演变的基础性工...古地理重建是研究地质历史时期地表构造过程、海陆格局和地貌环境特征的一项综合研究,并通过绘制表达海洋和大陆的古代轮廓以及重要的地形和地表环境的地图来呈现,是还原地球演化历史、预测能源矿产分布、认识生命和气候演变的基础性工作。随着大数据时代的到来,数字化方法的应用为古地理图快速更新和友好呈现提供了方便。目前,全球有多个团队发布了数字化的全球古地理重建模型以及相关的数据和方法,如EarthByte、PaleoMap、UNIL、Deep Time Maps等团队。笔者研究团队基于“深时数字地球(Deep-time Digital Earth,DDE)”国际大科学计划提出的数据-知识-模型驱动的古地理重建思想,提出基于数字化方法驱动的升级更新全球古地理图的新流程,并通过不断尝试地球科学与信息科学的交叉融合,从知识图谱、大数据分析和机器学习技术等方面开发了多项古地理重建应用技术。以东特提斯域中二叠世—中三叠世的古地理重建为例,首先在GPlates软件平台上重建了板块构造框架,再利用岩相古地理图自动生成地形地貌图并结合人工校正,最后在GPlates软件通过图层叠加实现了中二叠世—中三叠世东特提斯域的动态数字综合古地理重建。本用例与广泛使用的Scotese(2021)的古地理图对比,在成图效率、数据丰富性和可追溯性、模型准确性等方面都有明显提升,并为该时期板块运动、冰期消亡、大洋缺氧和生物灭绝等重大地质事件的研究提供新的约束和启示。展开更多
Paleogeographic analysis accounts for an essential part of geological research,making important contributions in the reconstruction of depositional environments and tectonic evolution histories(Ingalls et al.,2016;Mer...Paleogeographic analysis accounts for an essential part of geological research,making important contributions in the reconstruction of depositional environments and tectonic evolution histories(Ingalls et al.,2016;Merdith et al.,2017),the prediction of mineral resource distributions in continental sedimentary basins(Sun and Wang,2009),and the investigation of climate patterns and ecosystems(Cox,2016).展开更多
Paleogeography is the merger of lithology,depositional environments,tectonic plate movements,topography,climate patterns and ecosystems(reefs,vegetation)through time(e.g.,Scotese,2014,2016,2017;Blakey,2019).The constr...Paleogeography is the merger of lithology,depositional environments,tectonic plate movements,topography,climate patterns and ecosystems(reefs,vegetation)through time(e.g.,Scotese,2014,2016,2017;Blakey,2019).The construction of paleogeographic maps using tectonic plate reconstructions requires a multi-year community effort that shares databases,standards and computer projection methods.展开更多
The Central-east Asian continent,in which China is presently located,is a composite terrane composed of many small or micro-scale blocks and orogenic belts (Ren et al.,1999).Compared with large-scale cratons such as N...The Central-east Asian continent,in which China is presently located,is a composite terrane composed of many small or micro-scale blocks and orogenic belts (Ren et al.,1999).Compared with large-scale cratons such as North America and Siberia,the blocks that make up China are much smaller.For example,the North China and Siberian blocks,as well as some part of the ancient African continent,belonged to part of the Colombia supercontinent and connected with Baltica (Rogers and Santosh,2002;Lu et al.,2002).After major rifting episodes at 1.8-1.6 Ga.展开更多
基金“深时数字地球”(Deep-time Digital Earth,DDE)国际大科学计划国家科技重大专项项目课题“苏里格低渗透致密砂岩储层结构重建技术”(编号:2016ZX05050005)成都理工大学研究生教育教学改革重点项目“实景三维数字露头实践教学平台研究、实现与示范”(编号:2022YJG112)联合资助。
文摘古地理重建是研究地质历史时期地表构造过程、海陆格局和地貌环境特征的一项综合研究,并通过绘制表达海洋和大陆的古代轮廓以及重要的地形和地表环境的地图来呈现,是还原地球演化历史、预测能源矿产分布、认识生命和气候演变的基础性工作。随着大数据时代的到来,数字化方法的应用为古地理图快速更新和友好呈现提供了方便。目前,全球有多个团队发布了数字化的全球古地理重建模型以及相关的数据和方法,如EarthByte、PaleoMap、UNIL、Deep Time Maps等团队。笔者研究团队基于“深时数字地球(Deep-time Digital Earth,DDE)”国际大科学计划提出的数据-知识-模型驱动的古地理重建思想,提出基于数字化方法驱动的升级更新全球古地理图的新流程,并通过不断尝试地球科学与信息科学的交叉融合,从知识图谱、大数据分析和机器学习技术等方面开发了多项古地理重建应用技术。以东特提斯域中二叠世—中三叠世的古地理重建为例,首先在GPlates软件平台上重建了板块构造框架,再利用岩相古地理图自动生成地形地貌图并结合人工校正,最后在GPlates软件通过图层叠加实现了中二叠世—中三叠世东特提斯域的动态数字综合古地理重建。本用例与广泛使用的Scotese(2021)的古地理图对比,在成图效率、数据丰富性和可追溯性、模型准确性等方面都有明显提升,并为该时期板块运动、冰期消亡、大洋缺氧和生物灭绝等重大地质事件的研究提供新的约束和启示。
基金granted by the National Natural Science Foundation of China(Grant No.41802126)Open Fund of Key Laboratory of Sedimentary Mineralization and Sedimentary Minerals in Shandong Province(Grant No.DMSM2017006).
文摘Paleogeographic analysis accounts for an essential part of geological research,making important contributions in the reconstruction of depositional environments and tectonic evolution histories(Ingalls et al.,2016;Merdith et al.,2017),the prediction of mineral resource distributions in continental sedimentary basins(Sun and Wang,2009),and the investigation of climate patterns and ecosystems(Cox,2016).
基金partially supported by the National Natural Science Foundation of China(Grant No.4187020378).
文摘Paleogeography is the merger of lithology,depositional environments,tectonic plate movements,topography,climate patterns and ecosystems(reefs,vegetation)through time(e.g.,Scotese,2014,2016,2017;Blakey,2019).The construction of paleogeographic maps using tectonic plate reconstructions requires a multi-year community effort that shares databases,standards and computer projection methods.
基金sponsored by the National Natural Science Foundation of China(Grant No.4187020378).
文摘The Central-east Asian continent,in which China is presently located,is a composite terrane composed of many small or micro-scale blocks and orogenic belts (Ren et al.,1999).Compared with large-scale cratons such as North America and Siberia,the blocks that make up China are much smaller.For example,the North China and Siberian blocks,as well as some part of the ancient African continent,belonged to part of the Colombia supercontinent and connected with Baltica (Rogers and Santosh,2002;Lu et al.,2002).After major rifting episodes at 1.8-1.6 Ga.
