A strange case of two fishes: enigmatic disappearance of bone tissue or an originally unossified osteostracanTinn, Oive; Lang, Liisa; Märss, Tiiu; Kirsimäe, KalleThe Fossil Week : abstract book : 5th International Palaeontological Congress: IPC5 2018 : Paris, 9th-13th July, 20182018 / p. 858 https://ipc5.sciencesconf.org/data/IPC5_Abstract_Book.pdf

Authigenesis of biomorphic apatite particles from Benguela upwelling zone sediments off Namibia: The role of organic matter in sedimentary apatite nucleation and growthMänd, Kaarel; Kirsimäe, Kalle; Lepland, Aivo; Lumiste, KaarelGeobiology2018 / p. 640-658 : ill https://doi.org/10.1111/gbi.12309 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Basics of new utilization processes for oil shale combustion wastesKuusik, Rein, keemik; Uibu, Mai; Raado, Lembi-Merike; Süld, Tiia-Maaja; Väizene, Vivika; Irha, Natalja; Kirsimäe, Kalle; Loide, Valli; Meriste, TõnisInternational Symposium "Oil shale 100 years" : Estonia, Sept. 20-23, 2016 : [abstracts]2016 / p. 37

Carbon dioxide sequestration in power plant Ca-rich ash waste depositsLeben, Kristjan; Mõtlep, Riho; Konist, Alar; Pihu, Tõnu; Kirsimäe, KalleOil shale2021 / p. 65–88 : ill https://doi.org/10.3176/oil.2021.1.04 https://kirj.ee/wp-content/plugins/kirj/pub/OS-1-2021-65-88_20210222125803.pdf Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Carbon isotope systematics of the Cambrian-Vendian aquifer system in the northern Baltic Basin : implications to the age and evolution of groundwaterRaidla, Valle; Kirsimäe, Kalle; Vaikmäe, Rein; Kaup, Enn; Martma, TõnuApplied geochemistry2012 / p. 2042-2052 : ill https://doi.org/10.1016/j.apgeochem.2012.06.005

Challenges in geological research in EstoniaMeidla, Tõnu; Kalm, Volli; Kirsimäe, Kalle; Vaikmäe, ReinResearch in Estonia : present and future2011 / p. 368-384

Changes in phosphorite composition and properties during mechanical activationTõnsuaadu, Kaia; Kaljuvee, Tiit; Petkova, Vilma; Traksmaa, Rainer; Kirsimäe, KalleResearchers' Network on Phosphates : The Third International Conference on the Valorization of Phosphates and Phosphorus Compounds : COVAPHOS III : Marrakech, Morocco, March 18th-20th, 2009 : proceedings2009 / p. 15-21

Characterization of oil shale ashes formed at industrial-scale CFBC boilersKuusik, Rein, keemik; Uibu, Mai; Kirsimäe, KalleOil shale2005 / 4S, p. 407-419 : ill https://artiklid.elnet.ee/record=b2352613*est

Chloritization of Upper Ordovician Pirgu bentonites - source material or diagenetic environment?Kirsimäe, Kalle; Hints, Rutt; Kallaste, Toivo; Kiipli, Enli; Kiipli, TarmoWOGOGOB-2004 : 8th Meeting of the Working Group on the Ordovician Geology of Baltoscandia : May 13-18, 2004, Tallinn and Tartu, Estonia : conference materials : abstracts and field guidebook2004 / p. 57-58 https://artiklid.elnet.ee/record=b2610235*est

ClimMIT - Climate change mitigation with CCS and CCU technologiesUibu, Mai; Siirde, Andres; Järvik, Oliver; Trikkel, Andres; Yörük, Can Rüstü; Nurk, Gunnar; Kirsimäe, Kalle; Hazak, Aaro; Konist, AlarProceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 20212021 / 9 p https://ssrn.com/abstract=3812288 https://doi.org/10.2139/ssrn.3812288

Composition of oil shale ashes from pulverized firing and circulating fluidized-bed boiler in Narva Thermal Power PlantsBitjukova, Liidia; Mõtlep, Riho; Kirsimäe, KalleOil shale2010 / 4, p. 339-353 : ill https://artiklid.elnet.ee/record=b2185248*est

A demineralized osteostracan fossil from the Silurian Kalana Lagerstätte of Estonia : revealing its internal anatomy and uncovering a unique type of fossilizationTinn, Oive; Lang, Liisa; Märss, Tiiu; Vahur, Signe; Kirsimäe, KalleLethaia2022 / 13 p. : ill https://doi.org/10.1111/let.12452 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Design of High Volume CFBC Fly Ash Based Calcium Sulphoaluminate Type Binder in Mixtures with Ordinary Portland CementPaaver, Peeter; Järvik, Oliver; Kirsimäe, KalleMaterials2021 / art. 5798 https://doi.org/10.3390/ma14195798 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Eesti fosforiidi säästlik väärindamine : [RITA MAARE projekti aruanne]2020 https://fond.egt.ee/fond/egf/9405

Geochemical study of stable carbon and oxygen isotopes in landfilled Ca­-rich oil shale ashLeben, Kristjan; Mõtlep, Riho; Paaver, Peeter; Konist, Alar; Pihu, Tõnu; Kirsimäe, KalleEstonian journal of earth sciences2020 / p. 134-142 : ill https://doi.org/10.3176/earth.2020.09 https://kirj.ee/public/Estonian_Journal_of_Earth_Sciences/2020/issue_3/earth-2020-3-121-133.pdf Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

High-CO2, acidic and oxygen-starved weathering at the Fennoscandian Shield at the Archean-Proterozoic transitionSoomer, Sigrid; Somelar, Peeter; Mänd, Kaarel; Driese, Steven G.; Lepland, Aivo; Kirsimäe, KallePrecambrian research2019 / p. 68-80 : ill https://doi.org/10.1016/j.precamres.2019.03.001

Hydrothermal regeneration of ammonium as a basin-scale driver of primary productivityStüeken, Eva E.; Kirsimäe, Kalle; Lepland, Aivo; Prave, Anthony R.Astrobiology2023 / p. 195-212 https://doi.org/10.1089/ast.2021.0203 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Impact of mechanical activation on physical and chemical properties of phosphorite concentratesTõnsuaadu, Kaia; Kaljuvee, Tiit; Petkova, Vilma; Traksmaa, Rainer; Bender, Villem; Kirsimäe, KalleInternational journal of mineral processing2011 / p. 104-109

Influence of oxy-fuel combustion of Ca-rich oil shale fuel on carbonate stability and ash compositionKonist, Alar; Valtsev, Aleksandr; Loo, Lauri; Pihu, Tõnu; Liira, Martin; Kirsimäe, KalleFuel2015 / p. 671-677 : ill https://doi.org/10.1016/j.fuel.2014.09.050 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Influence of the end-temperature on the oil shale fast pyrolysis process and its productsMaaten, Birgit; Siirde, Andres; Vahur, Signe; Kirsimäe, KalleJournal of thermal analysis and calorimetry2023 / p. 1647-1655 : ill https://doi.org/10.1007/s10973-022-11567-2 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Iron isotopes reveal a benthic iron shuttle in the palaeoproterozoic zaonega formation : basinal restriction, euxinia, and the effect on global palaeoredox proxiesMänd, Kaarel; Lalonde, Stefan V.; Paiste, Kärt; Thoby, Marie; Lumiste, Kaarel; Robbins, Leslie J; Kreitsmann, Timmu; Romashkin, Alexander E.; Kirsimäe, Kalle; Lepland, AivoMinerals2021 / art. 368, 25 p. : ill https://doi.org/10.3390/min11040368 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Joint efforts for utilization of oil shale ash in new areasKuusik, Rein, keemik; Uibu, Mai; Kirsimäe, Kalle; Pototski, Aleksander; Meriste, TõnisInternational oil shale symposium : Tallinn, Estonia, June 10-13, 20132013 / p. 52

Kalana quarryTinn, Oive; Kirsimäe, Kalle; Ainsaar, Leho; Männik, PeepXI Baltic Stratigraphical Conference : abstracts and field guide2024 / p. 71-76 : ill https://www.ester.ee/record=b5696260*est https://files.geocollections.info/d8d2f88a-4597-4509-8248-b72178cac2cd.pdf

Kunda clay pitKirsimäe, Kalle; Mens, Kaisa; Miidel, Avo15th Meeting of the Association of European Geological Societies "Georesources and public policy : research, management, environment" : 16-20 September 2007, Tallinn, Estonia : excursion guidebook2007 / p. 52-53 : ill https://www.ester.ee/record=b2291671*est

Linkage of diagenesis to depositional environments and stratigraphy in the northern part of the Baltic basinKleesment, Anne-Liis; Kirsimäe, Kalle; Martma, Tõnu; Šogenova, Alla; Urtson, Kristjan; Šogenov, KazbulatEstonian journal of earth sciences2012 / p. 15-32 : ill https://artiklid.elnet.ee/record=b2480019*est

Methanogenesis and metal leaching on anaerobic decomposition of graptolite argilliteMenert, Anne; Korb, Triin; Orupõld, Kaja; Teemusk, Alar; Sepp, Holar; Mander, Ülo; Ilmjärv, Tanel; Truu, Jaak; Paiste, Päärn; Kirsimäe, Kalle; Menert, Terje; Kamenev, Inna; Heinaru, Eeva; Heinaru, Ain; Kulli, Sirli Sipp; Kivisaar, MaiaEnvironmental Technology and Innovation2023 / art. 103139 https://doi.org/10.1016/j.eti.2023.103139 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Multiphase Silurian bentonites from western Estonia: possible diagenetic pathwaysHints, Rutt; Kirsimäe, Kalle; Somelar, P.; Kallaste, Toivo; Kiipli, TarmoThe Seventh Baltic Stratigraphical Conference : 17-18 May 2008, Tallinn, Estonia : abstracts & field guide2008 / p. 25

A new Byronia species from the Late Ordovician of EstoniaVinn, Olev; Kirsimäe, Kalle; Parry, Luke A.; Toom, UrsulaEstonian journal of earth sciences2016 / p. 201-206 : ill https://doi.org/10.3176/earth.2016.17 https://artiklid.elnet.ee/record=b2809365*est Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Oleviku- ja tulevikumaavarade uuringud Eestis : RITA MAAREAinsaar, Leho; Menert, Anne; Lust, Enn; Tõnsuaadu, Kaia; Kirsimäe, KalleRiigikogu Toimetised2021 / lk. 69–78 : ill https://www.ester.ee/record=b1361123*est https://rito.riigikogu.ee/wordpress/wp-content/uploads/2021/12/RiTo-44.pdf

Open-air deposition of Estonian oil shale ash : formation, state of art, problems and prospects for the abatement of environmental impactKuusik, Rein, keemik; Uibu, Mai; Kirsimäe, Kalle; Mõtlep, Riho; Meriste, TõnisOil shale2012 / p. 376-403 : ill https://kirj.ee/public/oilshale_pdf/2012/issue_4/Oil-2012-4-376-403.pdf

Origin and formation of methane in groundwater of glacial origin from the Cambrian-Vendian aquifer system in EstoniaRaidla, Valle; Pärn, Joonas; Schloemer, Stefan; Aeschbach-Hertig, Werner; Czuppon, György; Ivask, Jüri; Marandi, Andres; Sepp, Holar; Vaikmäe, Rein; Kirsimäe, KalleGeochimica et cosmochimica acta2019 / p. 247-264 : ill https://doi.org/10.1016/j.gca.2019.02.029 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Oxygenated conditions in the aftermath of the Lomagundi-Jatuli Event: The carbon isotope and rare earth element signatures of the Paleoproterozoic Zaonega Formation, RussiaKreitsmann, Timmu; Lepland, Aivo; Bau, M.; Prave, A.R.; Paiste, Kärt; Mänd, Kaarel; Sepp, Holar; Martma, Tõnu; Romashkin, A.E.; Kirsimäe, KallePrecambrian research2020 / art. 105855, 16 p. : ill https://doi.org/10.1016/j.precamres.2020.105855 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Palaeoproterozoic oxygenated oceans following the Lomagundi–Jatuli EventMänd, Kaarel; Lalonde, Stefan V.; Robbins, Leslie J.; Thoby, Marie; Paiste, Kärt; Kreitsmann, Timmu; Paiste, Päärn; Reinhard, Christopher T.; Romashkin, Alexandr E.; Planavsky, Noah J.; Kirsimäe, Kalle; Lepland, Aivo; Konhauser, Kurt O.Nature geoscience2020 / p. 302-306 https://doi.org/10.1038/s41561-020-0558-5 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Phase transformation and strength of hydrated circulating fluidised bed combustion ash sediment in an open environment over 15 years: implications for the long-term stability of ash waste plateausKonist, Alar; Paaver, Peeter; Pihu, Tõnu; Kirsimäe, KalleOil Shale2024 / p. 145-162 : ill https://doi.org/10.3176/oil.2024.3.01 https://www.ester.ee/record=b1072685*est

Potential influence of sulphur bacteria on Palaeoproterozoic phosphogenesisLepland, Aivo; Joosu, Lauri; Kirsimäe, KalleNature geoscience2014 / p. 20-24 : ill https://doi.org/10.1038/ngeo2005 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Properties and environmental impact of oil shale ash landfillsPihu, Tõnu; Konist, Alar; Puura, Erik; Liira, Martin; Kirsimäe, KalleOil shale2019 / p. 257–270 : ill http://www.kirj.ee/public/oilshale_pdf/2019/issue_2/OS-2019-2-257-270.pdf https://doi.org/10.3176/oil.2019.2.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Protracted post-glacial hydrocarbon seepage in the Barents Sea revealed by U–Th dating of seep carbonatesHimmler, Tobias; Wagner, Doris; Sahy, Diana; Vadakkepuliyambatta, Sunil; Chand, Shyam; Martma, Tõnu; Kirsimäe, Kalle; Mattingsdal, Rune; Panieri, Giuliana; Lepland, AivoFrontiers in earth science2024 / art. 1355621, 11 p. : ill https://doi.org/10.3389/feart.2024.1355621 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Redox zonation and organic matter oxidation in palaeogroundwater of glacial origin from the Baltic Artesian BasinPärn, Joonas; Affolter, Stephane; Ivask, Jüri; Kirsimäe, Kalle; Martma, Tõnu; Raidla, Valle; Vaikmäe, ReinChemical geology2018 / p. 149-161 : ill https://doi.org/10.1016/j.chemgeo.2018.04.027 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Redox-sensitive trace metal hyper-enrichment in Tremadocian Alum Shale (graptolite argillite) in northwestern Estonia, Baltic PalaeobasinVind, Johannes; Ofili, Sylvester; Mänd, Kaarel; Soesoo, Alvar; Kirsimäe, KalleChemical Geology2023 / art. 121746 https://doi.org/10.1016/j.chemgeo.2023.121746 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

REE + Y uptake in bioapatite revisited : facies-controlled variability in coeval conodontsLumiste, Kaarel; Paiste, Tõnn; Paiste, Päärn; Männik, Peep; Somelar, Peeter; Kirsimäe, KalleChemical Geology2023 / art. 121761 https://doi.org/10.1016/j.chemgeo.2023.121761 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

The REE-composition and petrography of apatite in 2Ga Zaonega Formation, Russia: The environmental setting for phosphogenesisJoosu, Lauri; Lepland, Aivo; Kirsimäe, Kalle; Romashkin, Alexander E.; Roberts, Nick M.W.; Martin, Adam P.; Črne, Alenka E.Chemical Geology2015 / p. 88 - 107 https://doi.org/10.1016/j.chemgeo.2014.11.013

A refined late-Cryogenian - Ediacaran earth history of South China: Phosphorous-rich marbles of the Dabie and Sulu orogensPrave, Anthony R.; Meng, Fanwei; Lepland, Aivo; Kirsimäe, Kalle; Kreitsmann, Timmu; Jiang, Clancy ZhijianPrecambrian research2018 / p. 166-176 : ill https://doi.org/10.1016/j.precamres.2017.11.022 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Sulphur isotope composition of dissolved sulphate in the Cambrian–Vendian aquifer system in the northern part of the Baltic Artesian BasinRaidla, Valle; Kirsimäe, Kalle; Ivask, Jüri; Kaup, Enn; Knöller, Kay; Marandi, Andres; Martma, Tõnu; Vaikmäe, ReinChemical geology2014 / p. 147-154 : ill https://doi.org/10.1016/j.chemgeo.2014.06.011 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

The CO2-binding by Ca-Mg-silicates in direct aqueous carbonation of oil shale ash and steel slagUibu, Mai; Kuusik, Rein, keemik; Andreas, Lale; Kirsimäe, KalleEnergy procedia2011 / p. 925-932 : ill https://www.researchgate.net/publication/251711714_The_CO_2_-binding_by_Ca-Mg-silicates_in_direct_aqueous_carbonation_of_oil_shale_ash_and_steel_slag

Transformation of calcareous oil-shale circulating fluidized-bed combustion boiler ashes under wet conditionsLiira, Martin; Kirsimäe, Kalle; Kuusik, Rein, keemik; Mõtlep, RihoFuel2009 / p. 712-718 : ill https://www.sciencedirect.com/science/article/pii/S0016236108003268

Two hundred years of geology education in EstoniaEstonian journal of earth sciences2020 / p. 175-176 https://kirj.ee/wp-content/plugins/kirj/pub/earth-4-2020-175-176_20201116140304.pdf http://www.ester.ee/record=b2246661*est

Two-billion-year-old evaporites capture Earth’s great oxidationBlättler, C.L.; Kirsimäe, Kalle; Kreitsmann, Timmu; Lepland, AivoScience2018 / p. 320-323 https://doi.org/10.1126/science.aar2687 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Ülevaade. Oleviku- ja tulevikumaavarade uuringud Eestis [Võrguväljaanne]Ainsaar, Leho; Menert, Anne; Lust, Enn; Tõnsuaadu, Kaia; Kirsimäe, Kalleerr.ee2022 "Ülevaade. Oleviku- ja tulevikumaavarade uuringud Eestis"