Fluid inclusions in halite from the Röt (lower triassic) salt deposit in central Germany: Evidence for seawater chemistry and conditions of salt deposition and recrystallization

Kovalevych, Volodymyr M.; Paul, Josef; Peryt, Tadeusz Marek

doi:10.1007/bf03228056

Cited by 14 publications

(6 citation statements)

References 24 publications

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“…The crys tal li za tion mech a nism of ha lite at the bot tom of mod ern evaporite bas ins is well-known (e.g., Valyashko, 1952;Lowenstein and Hardie, 1985;B¹bel and Schreiber, 2014). Mod ern ha lite crys tals fea tur ing chev ron tex tures rep re sent the same mech a nism of or i gin as those formed in ancient salt bas ins (Kovalevych et al, 2009;Kovalevych and Vovnyuk, 2010;Galamay and Bukowski, 2011). The struc tural features of chev ron ha lite are as so ci ated with a zonal dis tri bu tion of micro inclusions, paral lel to the crys tal growth fac ets.…”

Section: Primary Fluid Inclusionsmentioning

confidence: 92%

Calculation of salt basin depth using fluid inclusions in halite from the Ordovician Ordos Basin in China

Galamay

Meng

Bukowski

et al. 2019

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As so ci ate Ed i tor-Jacek Szczepañski Dur ing the Mid dle Or do vi cian, the salt de pos its of the Majiagou For ma tion of the Ordos Ba sin in North China formed, the halite in clud ing var i ous ge netic types of fluid in clu sion. In this study, fittest ing of pri mary in clu sions was per formed to re construct the phys i cal and chem i cal con di tions dur ing orig i nal ha lite sed i men ta tion. Dur ing the post-sed i men ta tion stage, salt was sub jected to el e vated tem per a tures (62-70°C) and pres sures of tens of megapascals. From these mea sure ments and math e mat i cal cal cu la tions, the gas pres sure was iden ti fied in the pri mary fluid in clu sions, which al lowed us to es ti mate that the brine col umn thick ness in the salt ba sin was ap prox i mately 40 m.

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Section: Primary Fluid Inclusionsmentioning

confidence: 92%

Calculation of salt basin depth using fluid inclusions in halite from the Ordovician Ordos Basin in China

Galamay

Meng

Bukowski

et al. 2019

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“…Ge net i cally, two types of fluid in clu sion as sem blages (FIA) can be dis tin guished within the ha lite stud ied: sec ond ary (or pseudo-sec ond ary) and pri mary as sem blages (e.g., Roedder, 1984a, b;Goldstein and Reynolds, 1994;Goldstein, 2001;Petrychenko and Peryt, 2004;Kovalevych et al, 2006Kovalevych et al, , 2009Kovalevych and Vovnyuk, 2010). Most of ten, the sec ond ary inclu sion as sem blages oc cur in ha lite crys tals, al though some may have formed dur ing recrystallisation pro cesses (pseudo --sec ond ary FIAs).…”

Section: Fluid Inclusions In Halite Crystalsmentioning

confidence: 99%

Evidence of high-temperature rock salt transformations in areas of occurrence of borate minerals (Zechstein, Kłodawa salt dome, Poland)

Toboła

Wachowiak²

2018

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2 Geosalt -Badania i ekspertyzy geologiczne z³ó¿ soli, Rzepichy 42, 30-240 Kraków, Po land Tobo³a, T., Wachowiak, J. 2018. Ev i dence of high-tem per a ture rock salt trans for ma tions in ar eas of oc cur rence of bo rate min er als (Zechstein, K³odawa salt dome, Po land). Geo log i cal Quar terly, 62 (1): 134-145, doi: 10.7306/gq.1390 Oc cur rences of bo rate min er als in the Zechstein salt-bear ing de pos its of the K³odawa salt dome (cen tral Po land), and the man ner of their de vel op ment, sug gest that the min er als were formed at high tem per a tures, that con sid er ably ex ceed the tem per a ture es ti mated from the ther mal gra di ent (~180°C). Re search on rock salt and po tas sium-mag ne sium salts con taining congolite and boracite, re spec tively, are con sis tent with high-tem per a ture pro cesses of trans for ma tions af fect ing the salt rocks in cer tain sec tions of the salt dome. The chem i cal com po si tion of, and daugh ter min er als oc cur ring in, pri mary fluid inclu sions in ha lite, orig i nat ing from the congolite zone, in di cated a very high pro por tion of po tas sium and mag ne sium in the brines from which the ha lite crys tal lised. The ther mal trans for ma tions ob served in in clu sions in di cate a ha lite crystallisation tem per a ture ex ceed ing 420°C. Anhydrite crys tals, co-oc cur ring with bo rate min er als, rep re sent unique fea tures as to the distri bu tion and com po si tion of solid and fluid in clu sions. These fea tures in di cate crystallisation or recrystallisation in con di tions that dif fered con sid er ably from those typ i cal of the salt dome, with the in volve ment of so lu tions of chang ing chem i cal com posi tions. The crys tals con tain mul ti ple solid in clu sions of trans par ent and non-trans par ent min er als, among which we have focused on car nal lite. The re la tion ships of car nal lite with liq uid and gas eous phases in di cate, as in the congolite zone, mi gra tion of very highly con cen trated brines with re spect to po tas sium and mag ne sium, or even trans port of car nal lite in the form of melt (liq uid). Mea sure ments of fluid in clu sion ho mog e ni za tion tem per a tures, within the range from 197.8 to 473.8°C, sup ported a high-tem per a ture or i gin for these min er als in hy dro ther mal con di tions.Key words: Zechstein, salt de posit, hy dro ther mal con di tions, bo rates, fluid in clu sions.

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“…The whole time, "ar agon ite seas" (SO 4 -rich and low-Ca), evap o ra tion and pre cip i ta tion of CaCO 3 and CaSO 4 took all Ca 2+ away from the brines, leav ing SO 4 2in ex cess dur ing the later brine evo lu tion. As a re sult, the rem nant brines in fluid inclu sions of ha lite are of Na-K-Mg-Cl-SO 4 (SO 4 -rich) type with out Ca 2+ (Khmelevska et al, 2000;Lowen stein et al, 2001;Kovalevych et al, 2009).…”

Section: Introductionmentioning

confidence: 98%

Ordovician seawater composition: evidence from fluid inclusions in halite

Meng

Zhang

Galamy³

et al. 2018

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Fluid in clu sions in ha lite can di rectly re cord the ma jor com po si tion of evap o rated sea wa ter; how ever, Or do vi cian ha lite is very rare. The Or do vi cian is a key time dur ing the evo lu tion his tory be cause pro found changes oc curred in the planet's ecosys tems. Ma rine life was char ac ter ized by a ma jor di ver si fi ca tion, the Great Or do vi cian Biodiversification Event and the Late Or do vi cian Mass Ex tinc tion, the first of the "big five" mass ex tinc tions. How ever, so far there is no data on the Or do vi cian sea wa ter. Data from the Or do vi cian-Si lu rian bound ary were avail able only. In this study, we re port the ma jor com po si tions from Mid dle Or do vi cian ha lite in China to give the ex act com po si tion of Or do vi cian sea wa ter. The ba sic ion com po si tion (K + , Mg 2+ , Ca 2+ , and SO 4 2-) of in clu sion brines was es tab lished with the use of ultramicrochemical anal y sis. The data on the chem ical com po si tion of the brines in the pri mary in clu sions in di cated that the brines were of Na-K-Mg-Ca-Cl (Ca-rich) type, and cover a huge gap in the evo lu tion of sea wa ter chem is try. The chem i cal com po si tion of the pri mary in clu sion brine in ha lite con firmed the ear lier re sults for the Cam brian and Si lu rian ha lite orig i nat ing from other salt bas ins and the pre vi ous spec u lation of "cal cite sea" dur ing the Or do vi cian, in di cat ing a higher po tas sium con tent in the Lower Pa leo zoic sea wa ter than in the sea wa ter of other pe ri ods of the Phanerozoic.

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Fluid inclusions in halite from the Röt (lower triassic) salt deposit in central Germany: Evidence for seawater chemistry and conditions of salt deposition and recrystallization

Cited by 14 publications

References 24 publications

Calculation of salt basin depth using fluid inclusions in halite from the Ordovician Ordos Basin in China

Calculation of salt basin depth using fluid inclusions in halite from the Ordovician Ordos Basin in China

Evidence of high-temperature rock salt transformations in areas of occurrence of borate minerals (Zechstein, Kłodawa salt dome, Poland)

Ordovician seawater composition: evidence from fluid inclusions in halite

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