Mode of Emplacement of Papuan Ultramafic Belt

Marius Hills: Morphometry, Rheology, and Mode of Emplacement

Mare domes are smooth low features with gentle convex upward profiles. Isolated domes may be found in almost all maria, but significant concentrations occur in the Hortensius/Milichius/T. Mayer region, Oceanus Procellarum, and Mare Tranquillitatis [1]. The Marius Hills in Oceanus Procellarum represent the lunar region in which domes are most abundant. The surface material of the complex has bee...

Lunar Gruithuisen and Mairan domes: Rheology and mode of emplacement

[1] The lunar steep-sided Gruithuisen and Mairan domes are morphologically and spectrally distinctive structures and appear similar to terrestrial extrusive volcanic features characterized by viscous magma. We use the basic morphologic and morphometric characteristics of the domes to estimate the yield strengths ( 10 Pa), plastic viscosities ( 10 Pa s), and effusion rates ( 50 m/s) of the magma...

U–Pb geochronology documents out-of-sequence emplacement of ultramafic layers in the Bushveld Igneous Complex of South Africa

Layered intrusions represent part of the plumbing systems that deliver vast quantities of magma through the Earth's crust during the formation of large igneous provinces, which disrupt global ecosystems and host most of the Earth's endowment of Pt, Ni and Cr deposits. The Rustenburg Layered Suite of the enormous Bushveld Igneous Complex of South Africa has been presumed to have formed by deposi...

Succession of Ultramafic Vegetation

The mam plant communities of ultramafic (serpentine) outcrops of a Mediterranean area in central Italy are described and their successional pathway discussed. Four vegetation stages are distinguished: a) an endemic garigue stage, with high percentage of exposed rocky soil belonging to Armerio-Alyssetum bertolonii; b) a garigue stage similar to the previous one but with several Mediterranean eve...

The Papuan Language of Tambora