All abstracts by Takeshi Kakegawa in conference series: Goldschmidt

(2023) Fe and Mg Isotope Fractionations in Ferruginous Sedimentary Rocks from the ~3.2 Ga Moodies Group, Barberton Greenstone Belt, South Africa
Otake T, Sugiura R, Shin K-C, Ohtomo Y, Kakegawa T & Sato T

(2023) Origin of B- and P-Rich Thermal Waters in Northeastern Japan: Modern Analogue of Nucleotide-Forming Environments on the Early Earth
Kakegawa T, Christensen S, Ishida A, Araoka D & Shinjo R

(2023) Microbial Nitrogen Cycle Recorded in the 3.2 Ga Banded Iron Formation of the Fig Tree Group, Barberton, S. Africa
Saito H, Ishida A, Hashizume K & Kakegawa T

(2023) Biological Response of Lake Baikal to Changing Hydrological Regimes on the Last Glacial-Post Glacial Transition
Nara FW, Miyahara H, Yamasaki S-I, Lougheed BC, Obrochta S, Kakegawa T, Tsuchiya N & Watanabe T

(2023) Transparent Carbon Films Containing Graphene in 3.2 Ga Sedimentary Rocks in the Moodies Group, Barberton Greenstone Belt, South Africa
Ohtomo Y, Otake T, Kakegawa T & Sato T

(2022) A New Approach for Detecting Trace Elements in Microfossils: Implications for the Paleoproterozoic Biosphere
Ishida A, Sasaki K, Kakegawa T, Takahata N & Sano Y

(2022) Archean Phosphorous Cycle Operated by Submarine Hydrothermal and Biological Processes
Kakegawa T

(2021) Unique Occurrence of Organic Matter in the Banded Iron Formation of the Fig Tree Group, Barberton, S. Africa: Implication to the Middle Archean Primary Producer
Saito H, Ishida A & Kakegawa T

(2021) New Evidence of Oxygenic Photosynthesizing Bacteria in 2.7 Ga Oceans and their Connection to Hydrothermal Vent Communities
Kakegawa T

(2021) Fe Isotope Signatures for Oxidative Precipitation of Ferrous Iron in ~3.2 Ga Shallow Ocean from the Moodies Group, Barberton Greenstone Belt, South Africa
Sugiura R, Otake T, Ohtomo Y, Sato T & Kakegawa T

(2020) New Morphotypes, Cell-Wall Structures, and Elemental Distribution of the Gunflint Microfossils
Sasaki K, Ishida A, Tkahata N, Sano Y & Kakegawa T

(2020) Two Distinct Nitrogen Sources for Microbial Activities in the 2.0 Ga Zaonega Formation
Ishida A, Sasaki K, Hashizume K, Kakegawa T & Lepland A

(2019) Discovery of New Morphotypes in ca. 1.9 Ga Gunflint Microfossils and their Complex Structure and Heterogeneous Chemistry
Sasaki K, Ishida A, Takahata N, Sano Y & Kakegawa T

(2019) Geochemical Evidence of Fermentative Methanogenesis Around 2.7 Ga Submarine Hydrothermal Vents
Kakegawa T, Osato T & Kunitake Y

(2019) Discovery of Primary Hematite-Silica Clusters in Kukatash Banded Iron Formation at 2.7 Ga Abitibi Greenstone Belt
Ishida A, Nemoto T & Kakegawa T

(2019) Phosphate Flux from Oceanic Crust to the Archean Oceans: Evidence from the 3.46 Ga Apex Basalt, Australia
Tsukamoto Y, Kakegawa T, Graham U, Liu Z-K, Ito A & Ohmoto H

(2018) New Evidence for Microbial Sulfur Metabolizm in 2.7 Ga Marine Environments
Kakegawa T & Kunitake Y

(2018) Micro to Nanostructures of Carbonaceous Materials in 3.2 Ga Banded Iron Formations, Moodies Group, Barberton Greenstone Belt, South Africa
Ohtomo Y, Nakajima R, Otake T, Kakegawa T & Sato T

(2018) Discovery of Ni-Fe Phosphides in the 3.46 Ga-Old Apex Basalt: Implications on the Phosphate Budget of the Archean Oceans
Tsukamoto Y, Kakegawa T, Graham U, Liu Z-K, Ito A & Ohmoto H