When thinly traded growth stocks (TTGS) listed on a secondary exchange experience difficulty in gaining investors’ attention, one possible solution is to increase the intensity of disclosure. However, if the stock is traded on a quote-driven system, market makers can collude to maintain wide bid-ask spreads that discourage firms from disclosing. As a result, TTGS traded on a quote-driven system...

Eoarchean [3.6 to 4.0 billion years ago (Ga)] tonalite-trondhjemite-granodiorite (TTG) is the major component of Earth's oldest remnant continental crust, thereby holding the key to understanding how continental crust originated and when plate tectonics started in the early Earth. TTGs are mostly generated by partial melting of hydrated mafic rocks at different depths, but whether this requires...

A large anticline structure that includes the West Azov and Remivka blocks occurs in western part of Domain Ukrainian Shield. These are composed rocks Mesoarchean (3.2-3.0 Ga) granite-greenstone association relics an older basement. The is divided into two parts by Bilotserkivka sub-latitudinal strike; northern Huliaipole blocks, southern comprised Saltycha anticline. Archean plagiogranitoids u...

Abstract Tonalite-trondhjemite-granodiorite (TTG) suites are the dominant component of Earth's first continents, but their origins debated. The trace element concentrations these rocks conventionally linked to source depths and inferred geodynamic settings with implicit assumption that TTG compositions source-controlled. Alternatively, variable may be caused by fractional crystallization in plu...

A large anticline structure occurs in the western part of Azov Domain Ukrainian Shield. It is composed rocks Mesoarchean (3.2-3.0 Ga) granite-greenstone association and relics an older basement. The divided into two parts by Bilotserkivka sub-latitudinal strike. northern includes Huliaipole Remivka blocks, southern comprises Saltycha anticline. U-Pb age plagiogneisses Lantsevo 3299 ± 11 Ma. In ...

Twenty-four composite samples of the fine-grained matrix glacial diamictites deposited from Mesoarchaean to Palaeozoic have been analysed for their silicon isotope composition and used establish, first time, long-term secular Si record compositional evolution upper continental crust (UCC). Diamictites with Archaean Palaeoproterozoic Nd model ages show greater heterogeneity than those younger (i...