remanent field
51Shifting cultivation — For methods, see slash and burn Shifting cultivation is an agricultural system in which plots of land are cultivated temporarily, then abandoned. This system often involves clearing of a piece of land followed by several years of wood harvesting… …
52Naine Blanche — Traduction terminée White dwarf → …
53Naines blanches — Naine blanche Traduction terminée White dwarf → …
54continental drift — Geol. the lateral movement of continents resulting from the motion of crustal plates. Cf. plate tectonics. [1925 30] * * * Large scale movements of continents over the course of geologic time. The first complete theory of continental drift was… …
55Holocene Epoch — formerly Recent Epoch Latest interval of the Earth s geologic history, dating from 10,000 years ago to the present. The younger of the two epochs that constitute the Quaternary Period, the Holocene follows the last glacial stage of the… …
56Terra Cimmeria — Paléomagnétisme martien mesuré par MGS au dessus des régions de Terra Cimmeria et de Terra Sirenum. Géographie Géologie Coordonnées …
57Dale Mabry Highway — State Road 573, State Road 597 Route information …
58mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
59geomagnetics — Branch of geophysics concerned with all aspects of the Earth s magnetic field, including its origin, variation through time, and manifestations in the form of magnetic poles, the magnetization of rocks, and local or regional magnetic anomalies. * …
60Typical magnetic properties of rocks — ▪ Table Typical magnetic properties of rocks rock Jn natural remanent magnetization (10−5 electromagnetic units per cubic centimetre) k magnetic susceptibility (10−5 electromagnetic units per cubic centimetre) ratio* Qn=Jn/k·Hex Igneous granite… …
