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The preservation of potential biosignatures in these sites may depend on the nature of precipitated salts and the early diagenetic history of\n                    <jats:italic toggle=\"yes\">in situ<\/jats:italic>\n                    minerals. In this study, we explore a collection of Mars analog hypersaline depositional environments in British Columbia. Magnesium salts and other sulfate and carbonate salts precipitate from the variable water chemistry of Atlin Playa and a suite of lakes on the Cariboo Plateau. Authigenic and detrital grains were distinguished on the basis of their microscale morphology revealed by scanning electron microscopy. Authigenic minerals display distinct textures such as globular or prismatic clumps or delicately preserved cement that envelops angular, detrital grains. However, microscale authigenic textures become rare below the sediment\u2013water interface due to early diagenetic dissolution and reprecipitation of salts during wet\u2013dry cycles in the lakes. Such early diagenetic overprinting of salts could pose problems for identifying primary environments and any potential biosignatures they might have preserved in 3\u20134 billion-year-old rocks on Mars. The \u03b4\n                    <jats:sup>13<\/jats:sup>\n                    C of organic matter and \u03b4\n                    <jats:sup>34<\/jats:sup>\n                    S of sulfate salts are reflective of source materials instead of diagenesis. Total organic carbon content is a function of the abundance of salt minerals, with a well-defined maximum in organic carbon content at an optimum salt content. Our findings demonstrate hypersaline lakes as key preservers of organic carbon and salts as a high-priority mineral target for finding organic carbon on Mars.\n                  <\/jats:p>","DOI":"10.1177\/15311074251413234","type":"journal-article","created":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T07:39:32Z","timestamp":1768376372000},"page":"48-65","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":0,"title":["Biotic and Abiotic Signatures in Sulfate- and Carbonate-Rich Hypersaline Lakes as Analogs for Mars"],"prefix":"10.1177","volume":"26","author":[{"given":"Hemani","family":"Kalucha","sequence":"first","affiliation":[{"name":"California Institute of Technology, Division of Geologic and Planetary Sciences, Pasadena, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Benjamin W.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Iowa State University, Department of the Earth, Atmosphere, and Climate, Ames, Iowa, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miquela","family":"Ingalls","sequence":"additional","affiliation":[{"name":"Pennsylvania State University, Department of Geosciences, University Park, Pennsylvania, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul D.","family":"Asimow","sequence":"additional","affiliation":[{"name":"California Institute of Technology, Division of Geologic and Planetary Sciences, Pasadena, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hanna C.","family":"Leapaldt","sequence":"additional","affiliation":[{"name":"Pennsylvania State University, Department of Geosciences, University Park, Pennsylvania, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ellen","family":"Olsen","sequence":"additional","affiliation":[{"name":"Pennsylvania State University, Department of Geosciences, University Park, Pennsylvania, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Mullahoo","sequence":"additional","affiliation":[{"name":"California Institute of Technology, Division of Geologic and Planetary Sciences, Pasadena, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Woodward W.","family":"Fischer","sequence":"additional","affiliation":[{"name":"California Institute of Technology, Division of Geologic and Planetary Sciences, Pasadena, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2026,1,13]]},"reference":[{"key":"e_1_3_5_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-031-54306-7_7"},{"key":"e_1_3_5_3_1","doi-asserted-by":"publisher","DOI":"10.1130\/G22316.1"},{"key":"e_1_3_5_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/gj.1326"},{"key":"e_1_3_5_5_1","doi-asserted-by":"publisher","DOI":"10.3389\/fenvs.2019.00108"},{"key":"e_1_3_5_6_1","doi-asserted-by":"publisher","DOI":"10.2110\/jsr.2007.038"},{"key":"e_1_3_5_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.chemgeo.2013.05.018"},{"key":"e_1_3_5_8_1","doi-asserted-by":"publisher","DOI":"10.1029\/2023JE008155"},{"key":"e_1_3_5_9_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.abg5449"},{"key":"e_1_3_5_10_1","doi-asserted-by":"publisher","DOI":"10.1029\/2024JE008520"},{"key":"e_1_3_5_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10498-018-9333-2"},{"key":"e_1_3_5_12_1","doi-asserted-by":"publisher","DOI":"10.2475\/ajs.299.7-9.697"},{"key":"e_1_3_5_13_1","unstructured":"Cannon KM. Spotted Lake: Analog for Hydrated Sulfate Occurrences in the Last Vestiges of Evaporating Martian Paleolakes. Doctoral dissertation PhD thesis. Queen\u2019s University: Kingston Canada; 2012."},{"key":"e_1_3_5_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cretres.2023.105788"},{"key":"e_1_3_5_15_1","doi-asserted-by":"publisher","DOI":"10.1089\/ast.2020.2237"},{"key":"e_1_3_5_16_1","doi-asserted-by":"publisher","DOI":"10.1029\/2023JE008041"},{"key":"e_1_3_5_17_1","doi-asserted-by":"publisher","DOI":"10.1029\/2024JE008587"},{"key":"e_1_3_5_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.scitotenv.2018.02.225"},{"key":"e_1_3_5_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.gca.2024.01.008"},{"key":"e_1_3_5_20_1","volume-title":"British Columbia Digital Geology","author":"Cui Y","year":"2017","unstructured":"Cui Y, , Miller D, , Schiarizza P, et al. British Columbia Digital Geology. (British Columbia Geological Survey Open File 2017-8. Data version 2019-12-19.) 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