(Table 2) Abundance of Radiolaria species in sediment samples from Core AMK4-340, supplement to: Matul, Alexander G (1995): On the problem of paleoceanological evolution of the Reykjanes Ridge region (North Atlantic) during the last deglaciation based on a study of radiolaria. Oceanology, 34(6), 806-814

• Main Author: Matul, Alexander G
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1995
• Subjects: DEPTH, sediment/rock; Depth, top/min; Depth, bottom/max; Age, dated; Amphimelissa setosa; Spongodiscus osculosus; Phorticium clevei; Artostrobium tumidulum; Cromyechinus borealis; Pseudodictyophimus gracilipes; Cycladophora davisiana; Lithomitra arachnea; Spongotrochus glacialis; Lithelius spiralis; Lithomelissa setosa; Stylodictya validispina; Stylochlamidium venustum; Stylatractus pyriformis; Theocorythium trachelium dianae; Lithomelissa thoracites; Tricolocapsa papillosa mediterranea; Spongocore puella; Eucyrtidium acuminatum; Axoprunum stauraxonium; Lamprocyclas maritalis; Hymeniastrum euclidis; Gravity corer; Age, radiocarbon; Counting, Stereo Microscope; AMK4; Akademik Mstislav Keldysh; Archive of Ocean Data ARCOD; Greenland; Reykjanes; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.744983; https://doi.pangaea.de/10.1594/PANGAEA.744983

Over the past 13 kyr the most significant natural changes in the Reykjanes ridge region took place within 13-7.8 kyr B.P. They resulted from alternating intensifications of the influence of the Labrador (LWM) and Norwegian-Greenland (NGWM) water masses. During 13-11.7 kyr B.P. natural conditions were governed by influence of LWM with sea surface temperature (SST) 3-5°C lower present one. During 11.7-10.3 kyr B.P. NGWM with SST 6-7°C lower present one predominated. During 10.3-9.5 kyr B.P. oceanographic conditions were rapidly transforming and approaching present ones controlled by interaction between LWM and North Atlantic water masses; SST abruptly increased almost to the present value. During 9.5-8.3 kyr B.P. intensification of NGWM led to small decrease of SST (1.5-2.5°C below present value; between 8.3 and 7.8 kyr B.P. natural conditions had approximated present ones and later on remained relatively stable; SST fluctuated with an amplitude of about 1.5°C.