Jones E J W Laughton Anthony S Hill M N Davies D 0000-0001-6304-3938 1966 Annotated record of the detailed examination of Mn deposits from the Madcap Volcano in the Madeira-Cape Verde Abyssal plain dataset https://doi.org/10.1594/PANGAEA.874690 Jones E J W Laughton Anthony S Hill M N Davies D 0000-0001-6304-3938 1976 A geophysical study of part of the western boundary of the Madeira-Cape Verde Abyssal plain journal article Deep Sea Research and Oceanographic Abstracts 13(5) https://doi.org/10.1016/0011-7471(76)90909-8 889-907 The results are discussed of a geophysical survey undertaken by R.R.S. Discovery II early in 1962 in an area centred on 29° 15'N, 25° 5'W at the western extremity of the Madeira-Cape Verde Abyssal Plain. Seismic investigations show that the sediments are underlain by an intermediate layer about 2 km in thickness of velocity 4.1-5.4 km/sec which overlies a deep layer 5.2-km thick of velocity 6.3-6.8 km/sec. Refracted arrivals on the longest seismic line give a depth of 13.2 km to the M discontinuity. Magnetic results indicate that the topography of the abyssal hills in the western part of the area is probably continued eastwards as sub-bottom relief beneath the sediments of the abyssal plain. They also support the hypothesis that the intermediate seismic layer (layer 2) is composed predominantly of volcanic rocks. Examination of a well-defined magnetic anomaly over one topographic feature ("The Madcap Volcano") shows it to be composed of magnetized rocks (I = 8.4 × 10**-3 e.m.u./cm**3) having a direction of magnetization which points upwards at 25° with an azimuth of 305°. Measurements at ten heat flow stations show that the average geothermal flux in this region is 1.20 (±0.11) µcal/cm**2/sec. Grant John Bruce Moore Carla J carla.j.moore@noaa.gov 0000-0002-2610-8648 Alameddin George Chen Kuiying Barton Mark 1992 The NOAA and MMS Marine Minerals Geochemical Database National Geophysical Data Center, NOAA https://doi.org/10.7289/V52Z13FT Warnken Robin R rrw@luna.ngdc.noaa.gov Virden William T Moore Carla J carla.j.moore@noaa.gov 0000-0002-2610-8648 1992 The NOAA and MMS Marine Minerals Bibliography National Geophysical Data Center, NOAA https://doi.org/10.7289/V53X84KN -25.441667 -25.391667 28.833333 28.85 -25.416667 28.841666500000002 1962-02-01T00:00:00 1962-02-01T00:00:00 0.0 0.0 not specified NOAA-MMS NOAA and MMS Marine Minerals Geochemical Database https://wiki.pangaea.de/wiki/NOAA-MMS D4810 28.85 -25.441667 Atlantic Ocean -2576.0 1962-02-01T00:00:00 MADCAP_62 MADCAP_62 1962-02-01T00:00:00 1962-02-01 1962-02-28T00:00:00 1962-02-28 Discovery II (1929) Discovery II (1929) Photo/Video PV D4814 28.833333 -25.391667 Atlantic Ocean -2571.0 1962-02-01T00:00:00 MADCAP_62 MADCAP_62 1962-02-01T00:00:00 1962-02-01 1962-02-28T00:00:00 1962-02-28 Discovery II (1929) Discovery II (1929) Photo/Video PV 26 CC-BY-3.0 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/ From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database. Event label Event Event Identification ID ID DEPTH, sediment/rock Depth sed m depth http://purl.obolibrary.org/obo/PATO_0001595 sediment http://purl.obolibrary.org/obo/ENVO_00002007 rock Length L http://dbpedia.org/resource/Length Depth sed [m] Position Position position http://purl.obolibrary.org/obo/PATO_0000140 Visual description Position Deposit type Deposit type Deposit type Quantity of deposit Quantity Quantity Substrate type Substrate substrate Substrate Sediment type Sediment sediment http://purl.obolibrary.org/obo/ENVO_00002007 Sediment Description Description description Description File name File name File name Uniform resource locator/link to image URL image URL image supplement citable author184 author21391 author25940 author53898 author53899 author53900 author53901 author53916 author568 author56871 author61483 basis4090 campaign3390154 campaign44604 event2835901 event2835902 geocode1 geocode1599 geocode1600 geocode1601 geocode8128 journal16769 license101 method11433 method268 param144749 param144750 param25541 param48490 param53214 param54243 param7055 param7056 param88037 project4198 ref67195 ref67263 ref90472 term1073131 term1073316 term20640 term38263 term40710 term41044 term41056 term43863 topotype1