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경상남도 사천시 진주층에서 산출되는 막대기형 스트로마톨라이트
최종걸 한국지구과학회 2007 한국지구과학회지 Vol.28 No.1
number of rod-shaped stromatolites (RS) characterized by concentric lamination with curd-shaped, stratiform, and smallcolumnar stromatolites. Unlike the world trend, a massive distribution of rod-shaped stomatolite was discovered in theregion. The mineral composition, diagenetic alteration, and weathering process of the kind were analyzed by EPMA. Thegross morphology of RSS is almost identical to broken plant twigs or stems formed by microbial activity onto which itgrew. RSSs are interpreted as stromatolitic algae over plant twigs, which formed through concentric carbonate precipitationby epiphytic algal photosynthesis. The distribution of localities and horizons of the stromatolite imply that RSS isallochthonous and autochthonous. Two types of cyanobacterial filaments and one type of green algal filament werediscovered. The size frequency distribution of calcified filamentous microfossils found in stromatolite was 2.2m and 7.8m in mean diameter of the former, 32.3m in mean diameter of the latter. The cyanobacterial fossils played a key rolein the formation of stromatolite, while the green algal filament was auxiliary stromatolite - builder stromatolites. Thefilamentous microfossils including trichome were found within the stromatolitic laminae.......... Stromatolite, Jinju Formation, Cyanobacteria, Sacheon, carbonates. . : .... .... ... ...... ...... ... .. (.... , ... , .. , .. ... ). ........ (stromatolite). .... . ... .. .... .. .... ......... .... ....