Among his topics are landscaping the continent: the Holocene and Anthropocene, freezing the continent: Pleistocene glaciation of the Great Lakes region, rifting the continent: the
Mesoproterozoic midcontinent rift and Grenville Province, making the crust: solidification of the Hadean Magma Ocean, and sustaining the continent: our geologic future.
The crystalline basement of Estonia: rock complexes of the Palaeoproterozoic Orosirian and Statherian and
Mesoproterozoic Calymmian periods, and regional correlations.
This is quite different form Xiaweidian section in Beijing, where a parallel unconformity exists between the Changping Formation (Series 2, Stage 4 of Cambrian, but older than Mantou Formation) and the underlying Jingeryu Formation of Neoproterozoic (Mei, 2011), and the Qijiayu section, where the Mantou Formation is in a parallel unconformity with the underlying Wumishan Formation of
Mesoproterozoic (Xiao et al., 2017b).
Organic geochemical characteristics of the
Mesoproterozoic Hongshuizhuang Formation from northern China: implications for thermal maturity and biological sources.
A geochronological framework for sedimentation and
Mesoproterozoic tectonomagmatic activity in lower Belt-Purcell rocks exposed west of Kimberley, BC.
A biological origin is proposed for spherulitic structures for the
Mesoproterozoic Gaoyuzhuang Fm., China (1.4-1.5 Ga) (Lee and Golubic, 1999).
That made sense because most of the boring billion took place during the
Mesoproterozoic era, when the rate of burial of decaying organic carbon matter under marine sediments flatlined.
Geological formations in which was carved out the upper valley of Gersa River are represented by metamorphic rocks
mesoproterozoic age, belonging to the Bretila series in Barlea massif, sedimentary rocks of eocene, oligocene and miocene epoch (limestone, conglomerates, sandstone, clays), which is contained in the Dealul Megiani, Dealul Taului, and the periphery of Barlea and Basca massifs, and igneous intrusive rocks, pannonian ages (micro granodiorites) that are present in the Basca Massif (Figure 4).
He covers the tectonic subdivision of the craton, Archaen geology of the eastern and western blocks, the paleoproterozoic amalgamation of the craton, and its
mesoproterozoic accretion and meso-neoproterozoic extension and rifting.
The geological evolution of the Qingling orogenic belt can be divided into the formation of Precambrian basement from Neoarchaean to
Mesoproterozoic (Ar3-Pt2), evolution of plate tectonics from Neoproterozoic to Middle Triassic ([Pt.sub.3]-[T.sub.2]), and intracontinental orogeny from Mesozoic (Late Triassic) to Cenozoic (Mz([T.sub.3])-Kz) [24].