Search results for "Granit"
showing 2 items of 22 documents
Eastern Ancient Terrane of the North China Craton
2016
Based on the spatial distribution of ancient rocks and zircons, three ancient terranee older than ca. 2.6 Ga have recently been identified in the North China Craton, namely the Eastern, Southern, and Central Ancient Terranee. The Eastern Ancient Terrane is the best studied and understood of the three ancient terranes. It has a long geological history back to ca. 3.8 Ga ago and includes the areas of Anshan-Benxi, eastern Hebei, eastern Shandong and western Shandong. In Anshan-Benxi, several different types of 3.8 Ga rocks were discovered together with 3.1–3.7 Ga rocks, whereas 2.9–3.0 Ga K-rich granites and 2.5 Ga syenogranite occur on larger scales. In eastern Hebei, 3.0–3.4 Ga rocks and ol…
La porte Peyrine à Châteauponsac (Haute-Vienne) : une possible fortification de l’Antiquité tardive inédite ?
2019
1° In Limousin, our knowledge of ancient monumentalfuneral architecture has been given a new impetus forresearch during the past fifteen years thanks to the inventoryof large-stone blocks reused in civil and religious constructionsor even in later funeral arrangements.2° It is from this standpoint that the Châteauponsac sitehas been included where, in an urban landscape, a largeconcentration of examples of ancient architecture areconserved. Among the major facilities preserving in theirelevations a large number of these re-used stones is includedthe ancient Saint-Thyrse abbey church and the Porte Peyrine ,which unlike the neighbouring religious building, has so farbeen the subject of no spe…