NettetIf you love geology, be sure to take a look at the Holleford Meteorite Crater. This site is marked by a plaque, situated along Holleford Road. When you return to Sydenham, … NettetPhotomicrograph of a thin section of shattered, coesite-bearing quartz from Holleford Crater, Ontario, Canada. The severely fractured quartz and the high pressure quartz polymorph, coesite, are the products of hypervelocity shock generated by meteorite impact with the earth (Cross nicols, about ×13). See page 379 Editorial
HOLLEFORD IMPACT STRUCTURE – Crater Explorer
Nettet26. jun. 2024 · A probable meteorite crater of Precambrian age at Holleford, Ontario (Vol. 24, No. 6, pp. 117–142). Publications of Dominion Observatory. Google Scholar NettetMedia in category "Holleford crater" The following 6 files are in this category, out of 6 total. Holleford Crater and cows DSCN0859r.jpg 1,024 × 768; 232 KB. Holleford crater and Crater Farm DSCN0857r.jpg 1,024 × 768; 265 KB. Holleford Crater historical plaque DSCN0854r.jpg 1,024 × 768; 228 KB. highlights panel in salesforce
Traduction de "météorites tombés sur terre" en anglais - Reverso …
NettetThe Holleford Crater is a 550-100-million-year-old meteor crater in Holleford, Ontario, just a stone’s throw from Serpent Mounds Park. The landscape of the area is depressed, which is what led geologists to discover the crater, but despite the depression, the crater itself is not visible at the surface. Nettet26. apr. 2011 · In 1955, the Holleford meteor crater was discovered early in the systematic search of air photographs. The crater contains a thick layer of Palaeozoic sediments but still has the remnant of a rim, also mainly covered by sediments, rising 100 feet above the central region around approximately half the circumference. NettetThe Holleford Crater, a circular depression in southern Ontario, is filled with Paleozoic sediments and underlain by brecciated Precambrian igneous and metamorphic rocks. … highlights panama