{"refrec":{"BRefID":12989,"RR":"<b>Aalders, H.W.</b> (1972). Sedimentaire strukturen in de \"Southern Bight\" van de Noordzee. <i>NIOZ-rapport</i>, 1972(17). Nederlands Insituut voor Onderzoek der Zee: Texel. 12 pp.","BEntID":12989,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>NIOZ-rapport</i>, 1972(17). Nederlands Insituut voor Onderzoek der Zee: Texel.  12 pp.","DocTypID":13,"DocType":"Reports","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Aalders, H.W.","OrigTitleTranslFlag":1,"Authorstringtrunc":"Aalders, H.W.","Englishabstract":"In the Southern Bight of the North Sea 21 boxcores have been taken. In the central part of the Southern Bight, directional bimodal, mainly small-scale crossbedding, with some troughshaped sets are found. In 2 boxcores, large scale crossbedding is found. The grainsize, the sedimentary structures, and the calculated current velocities at one meter above the bed during spring tide, point to (recent) sedimentation by migration of small scale ripple trains under the normal flow regime in the Southern Bight. Boxcores from the sand wave field show no signs of a different sedimentation regime. Nor the sedimentary structures in boxcores from the depression west of the Brown Bank do. A slight dominance in the northern direction of the orientation of the cross bedding supports the calculated net sand transport to the north (McCAVE, 1971a). Off the coast of Holland, sedimentary structures and their orientation point to wave influence in sedimentation at 18 m depth. Sand, gravel and mud has been found close together off Lowestoft (East Anglia). The gravel consists for over more than 80% of flint, and shows no signs sedimentary structures. The gravel has recently been replaced. The mud consists of layers of sand, alternating with horizontally laminated clay. The recent deposition of clay is probably the result of a high concentration of suspended sediment during considerable time, coupled with negligible wave activity (McCAVE, 1971b).","AbstractOtherLang":"In de \"Southern Bight\" van de Noordzee zijn 21 monsters met emboxcore genomen. In het centrale deel van de \"Southern Bight\" is overwegend bimodaal gerichte kleinschalige scheve gelaagdheid gevonden, met een enkele trogvormige set. In 2 boxcores is grootschalige scheve gelaagdheid aangetroffen. De sedimentaire strukturen, de korrelgrootte, en de berekende snelheden op 1 m boven de zeebodem gedurende springtij wijzen erop dat de sedimentatie plaatsvindt door migratie van kleinschalige ribbels, onder het normaal in de \"Southern Bight\" heersende stroomregime. Uit de sedimentaire strukturen in de boxcores in het sandwavegebied en uit de vlakke gebieden blijkt geen verschil in sedimentatie omstandigheden. Boxcores uit de depressie ten westen van de Bruine Bank vertonen evenmin tekenen van afwijkende sedimentatie omstandigheden. Een licht overheersen van noordelijke richtingen van de oriëntaties van de scheve gelaagdheid staaft een berekend netto zandtransport in noordelijke richting (McCAVE, 1971a). In drie boxcores, op 18 m diepte voor de Hollandse kust genomen, wijzen de sedimentaire struktuur en de oriëntatie van de scheve gelaagdheid op mogelijke golfinvloed bij de sedimentatie. Voor de kust van East Anglia zijn dicht opeen zand-, grind- en kleirijke afzettingen gevonden. Het grind is struktuurloos en bestaat voor meer dan 80% uit vuursteen. Het grind is zeer recent verplaatst. De kleirijke afzetting bestaat uit lagen zand, afgewisseld met horizontaal gelaagde kleilagen. De recente sedimentatie van de kleirijke lagen is waarschijnlijk het gevolg van een hoge concentratie van gesuspendeerd materiaal die gedurende langere tijd voorkomt op de bodem, waarschijnlijk als gevolg van een geringe golfwerking.","BibLvlCode":"MS","StandardTitle":"Sedimentaire strukturen in de \"Southern Bight\" van de Noordzee","OrigTitleLangCode":"nl","OrigTitleLangCodeExtended":"dut","OrigTitleLangID":41,"DateLastModified":{"date":"2025-07-22 01:33:06.175990","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":null,"MonPub":1972,"DateUpdate":"2025-07-15","DateCreate":"2001-07-06","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":null,"monrec":{"MonID":12989,"ISBN":null,"PubliDate":1972,"IssueDate":null,"Volume":"1972","Issue":"17","Pagination":"12","Place":"Texel","Edition":null,"BRefXtra":null,"BRefXtraRR":null,"SerID":5697,"SerRR":"NIOZ-rapport. 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