In the past, the two major biomineralization motifs, biosilicification and biocalcification, were considered as two discrete processes. However, there is increasing evidence of the existence of an inextricable relationship between biosilica and calcium-based biominerals. The recent discovery of a unique silica–chitin–aragonite biocomposite in one genus of demosponges (Verongida) introduces a no...

Abstract Background Exploring a simple and versatile technique for direct immobilization of target enzymes from cell lysate without prior purification is urgently needed. Thus, novel all-in-one strategy β-1,3-xylanase was proposed, the were covalently immobilized on silica nanoparticles via elastin-like polypeptides (ELPs)-based biomimetic silicification SpyTag/SpyCatcher spontaneous reaction. ...

The Golden Butte sediment-hosted disseminated (Carlin-type) gold deposit is located on the western flank of the Cherry Creek Range in east central Nevada. The ore body contains nearly 3 million tons of gold ore with an average grade of 0.031 ounces per ton. The main host of the gold ore is the Mississippian Chainman Shale, a carbonaceous, silty claystone to siltstone. A low-angle (normal?) faul...

Marine diatoms play a very crucial role in carbon export, and current food-web become an important factor global silica cycle. This then has made the mechanism of their biosilicification interesting to be research subject. The classical theory states that metabolism been originated from absorption silicate ions, which might not give suitable explanation for solid silicification. In this study, ...

We examined biogenic silica production and elementary composition (biogenic Si, particulate organic carbon nitrogen) of Rhizaria diatoms in the upper 200 m along a transect Southwest Pacific sector Southern Ocean during austral summer (January–February 2019). From incubations using 32Si radioisotope, silicic acid uptake rates were measured at 15 stations distributed Polar Front Zone, Antarctic ...

This study's goal is to understand the structural events and episodes of fluid flow recorded in calcium carbonate precipitation sampled Mariana forearc serpentine mud volcanoes. Those active mounts provide a unique window deep affecting subduction channel mélange zone subducted Pacific Plate. To build conceptual model vein precipitations from volcanoes edifice, we unravelled origin, timing, mec...

Strata-bound elemental sulfur deposits occur in different circum-Mediterranean Miocene sedimentary successions containing evaporites and high amounts of organic matter. It is widely known that bacterial sulfate reduction processes are the triggering mechanisms involved origin hydrogen sulfide subsequent native sulfur. However, most these successions, there controversy over whether formed basin ...

Abstract In this study, a new assemblage of Ediacaran metazoan fossils is reported from the basal Stáhpogieddi Formation on Digermulen Peninsula Arctic Norway, including Anulitubus n. gen. Moczyd?owska in et al., formosus sp. Coniculus elegantis Fistula and crenulata al. The specimens are three-dimensionally preserved include tubular conical skeletons that morphologically distinguished by their...