FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W3003279878> ?p ?o ?g. }

• W3003279878 endingPage "2595" @default.
• W3003279878 startingPage "2561" @default.
• W3003279878 abstract "Abstract Recent studies of continental carbonates revealed that carbonates with similar fabrics can be formed either by biotic, biologically‐induced, biologically‐influenced or purely abiotic processes, or a combination of all. The aim of this research is to advance knowledge on the formation of carbonates precipitated (or diagenetically altered) in extreme, continental environments by studying biotic versus abiotic mechanisms of crystallization, and to contribute to the astrobiology debate around terrestrial analogues of Martian extreme environments. Both fossil (upper Pleistocene to Holocene) and active carbonate spring mounds from the Great Artesian Basin (South Australia) have been investigated. These carbonates consist of low‐Mg to high‐Mg calcite tufa. Four facies have been described: (i) carbonate mudstone/wackestone; (ii) phytohermal framestone/boundstone; (iii) micrite boundstone; and (iv) coarsely crystalline boundstone. The presence of filaments encrusted by micrite, rich in organic compounds, including ultraviolet‐protectants, in phytohermal framestone/boundstone and micrite boundstone is clear evidence of the existence of microbial mats at the time of deposition. In contrast, peloidal micrite, despite commonly being considered a microbial precipitate, is not directly associated with filaments in the Great Artesian Basin mounds. It has probably formed from nanocrystal aggregation on colloid particulate. Thus, where biofilms have been documented, it is likely that bacteria catalyzed the development of fabrics. It is less certain that microbes induced calcium carbonate precipitation elsewhere. Trace elements, including rare earth element distribution from laminated facies, highlight strongly evaporative settings (for example, high Li contents). Carbon dioxide degassing and evaporation are two of the main drivers for an increase in fluid alkalinity, resulting in precipitation of carbonates. Hence, although the growth of certain fabrics is fostered by the presence of microbial mats, the formation of carbonate crystals might be independent from it and mainly driven by extrinsic factors. More generally, biological processes may be responsible for fabric and facies development in micritic boundstone whilst micrite nucleation and growth are driven by abiotic factors. Non‐classical crystallization pathways (aggregation and fusion of nanoparticles from nucleation clusters) may be more common than previously thought in spring carbonate and this should be carefully considered to avoid misinterpretation of certain fabrics as by‐products of life. It is proposed here that the term ‘organic‐compound catalyzed mineralization’ should be used for crystal growth in the presence of organic compounds when dealing with astrobiological problems. This term would account for the possibility of multiple crystallization pathways (including non‐classical crystallization) that occurred directly from an aqueous solution without the direct influence of microbial mats." @default.
• W3003279878 created "2020-02-07" @default.
• W3003279878 creator A5002316603 @default.
• W3003279878 creator A5074345605 @default.
• W3003279878 date "2020-03-25" @default.
• W3003279878 modified "2023-09-26" @default.
• W3003279878 title "Crystallization pathways in the Great Artesian Basin (Australia) spring mound carbonates: Implications for life signatures on Earth and beyond" @default.
• W3003279878 cites W1623728788 @default.
• W3003279878 cites W170669301 @default.
• W3003279878 cites W172732969 @default.
• W3003279878 cites W1801166380 @default.
• W3003279878 cites W1954474335 @default.
• W3003279878 cites W1965460882 @default.
• W3003279878 cites W1970683199 @default.
• W3003279878 cites W1973732035 @default.
• W3003279878 cites W1974112454 @default.
• W3003279878 cites W1981034029 @default.
• W3003279878 cites W1981724307 @default.
• W3003279878 cites W1986859129 @default.
• W3003279878 cites W1987395850 @default.
• W3003279878 cites W1988457796 @default.
• W3003279878 cites W1988769780 @default.
• W3003279878 cites W1994930702 @default.
• W3003279878 cites W1996128165 @default.
• W3003279878 cites W2002103527 @default.
• W3003279878 cites W2004452806 @default.
• W3003279878 cites W2004601387 @default.
• W3003279878 cites W2004627033 @default.
• W3003279878 cites W2006321893 @default.
• W3003279878 cites W2006331814 @default.
• W3003279878 cites W2006593586 @default.
• W3003279878 cites W2013958442 @default.
• W3003279878 cites W2016184372 @default.
• W3003279878 cites W2018612157 @default.
• W3003279878 cites W2019306440 @default.
• W3003279878 cites W2020486883 @default.
• W3003279878 cites W2029298245 @default.
• W3003279878 cites W2030129547 @default.
• W3003279878 cites W2031190434 @default.
• W3003279878 cites W2032051744 @default.
• W3003279878 cites W2032411847 @default.
• W3003279878 cites W2036384349 @default.
• W3003279878 cites W2037966762 @default.
• W3003279878 cites W2038557901 @default.
• W3003279878 cites W2039561509 @default.
• W3003279878 cites W2044333312 @default.
• W3003279878 cites W2045162354 @default.
• W3003279878 cites W2045376179 @default.
• W3003279878 cites W2052560541 @default.
• W3003279878 cites W2053212287 @default.
• W3003279878 cites W2054735003 @default.
• W3003279878 cites W2054959591 @default.
• W3003279878 cites W2055958596 @default.
• W3003279878 cites W2056342672 @default.
• W3003279878 cites W2056880513 @default.
• W3003279878 cites W2058559710 @default.
• W3003279878 cites W2060587653 @default.
• W3003279878 cites W2061623835 @default.
• W3003279878 cites W2062708605 @default.
• W3003279878 cites W2063623647 @default.
• W3003279878 cites W2064126351 @default.
• W3003279878 cites W2066529194 @default.
• W3003279878 cites W2066648098 @default.
• W3003279878 cites W2070437461 @default.
• W3003279878 cites W2076647823 @default.
• W3003279878 cites W2077144015 @default.
• W3003279878 cites W2080104972 @default.
• W3003279878 cites W2080620693 @default.
• W3003279878 cites W2081130960 @default.
• W3003279878 cites W2081513790 @default.
• W3003279878 cites W2082980305 @default.
• W3003279878 cites W2087349210 @default.
• W3003279878 cites W2087944996 @default.
• W3003279878 cites W2088829314 @default.
• W3003279878 cites W2088856953 @default.
• W3003279878 cites W2092098869 @default.
• W3003279878 cites W2092761152 @default.
• W3003279878 cites W2093915435 @default.
• W3003279878 cites W2094242191 @default.
• W3003279878 cites W2094391398 @default.
• W3003279878 cites W2096522903 @default.
• W3003279878 cites W2098706110 @default.
• W3003279878 cites W2101849273 @default.
• W3003279878 cites W2103778493 @default.
• W3003279878 cites W2106997926 @default.
• W3003279878 cites W2107910663 @default.
• W3003279878 cites W2108299019 @default.
• W3003279878 cites W2109129197 @default.
• W3003279878 cites W2110484041 @default.
• W3003279878 cites W2112925614 @default.
• W3003279878 cites W2120537050 @default.
• W3003279878 cites W2126230700 @default.
• W3003279878 cites W2136656456 @default.
• W3003279878 cites W2138931681 @default.
• W3003279878 cites W2145154988 @default.
• W3003279878 cites W2145400567 @default.
• W3003279878 cites W2150772200 @default.
• W3003279878 cites W2153653432 @default.

• next