Research output: Contribution to journal › Article › peer-review
Lena River delta formation during the Holocene. / Bolshiyanov, D.; Makarov, A.; Savelieva, L.
In: Biogeosciences, No. 12, 2015, p. 579-593.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Lena River delta formation during the Holocene
AU - Bolshiyanov, D.
AU - Makarov, A.
AU - Savelieva, L.
PY - 2015
Y1 - 2015
N2 - Abstract. The Lena River delta, the largest delta of the Arctic Ocean, differs from other deltas because it consists mainly of organomineral sediments, commonly called peat, that contain a huge organic carbon reservoir. The analysis of delta sediment radiocarbon ages showed that they could not have formed as peat during floodplain bogging; rather, they accumulated when Laptev Sea water level was high and green mosses and sedges grew and were deposited on the surface of flooded marshes. The Lena River delta formed as organomineral masses and layered sediments accumulated during transgressive phases when sea level rose. In regressive phases, the islands composed of these sediments and other, more ancient islands were eroded. Each new sea transgression led to further accumulation of layered sediments. As a result of alternating transgressive and regressive phases, the first alluvial-marine terrace formed, consisting of geological bodies of different ages. Determining the formation age of different areas of the
AB - Abstract. The Lena River delta, the largest delta of the Arctic Ocean, differs from other deltas because it consists mainly of organomineral sediments, commonly called peat, that contain a huge organic carbon reservoir. The analysis of delta sediment radiocarbon ages showed that they could not have formed as peat during floodplain bogging; rather, they accumulated when Laptev Sea water level was high and green mosses and sedges grew and were deposited on the surface of flooded marshes. The Lena River delta formed as organomineral masses and layered sediments accumulated during transgressive phases when sea level rose. In regressive phases, the islands composed of these sediments and other, more ancient islands were eroded. Each new sea transgression led to further accumulation of layered sediments. As a result of alternating transgressive and regressive phases, the first alluvial-marine terrace formed, consisting of geological bodies of different ages. Determining the formation age of different areas of the
U2 - 10.5194/bg-12-579-2015
DO - 10.5194/bg-12-579-2015
M3 - Article
SP - 579
EP - 593
JO - Biogeosciences
JF - Biogeosciences
SN - 1726-4170
IS - 12
ER -
ID: 3923790