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Rigsby, Catherine A (1992): (Table 2) Trace element composition of seleceted clast and matrix materials from ODP Site 125-786 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.771330, Supplement to: Rigsby, CA (1992): Data report: Trace element analysis of clasts and matrix in sedimentary and volcaniclastic breccias at Site 786. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 681-682, https://doi.org/10.2973/odp.proc.sr.125.151.1992

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Abstract:
Shipboard examination of volcanic and sedimentary strata at Site 786 suggested that at least four types of breccias are present: flow-top breccias, associated with cooling and breakup on the upper surface of lava flows; autobreccias, formed by in-situ alteration at the base of flows; fault-gouge breccias; and true sedimentary breccias derived from weathering and erosion of underlying flows. It is virtually impossible to assess the origin of breccia matrix by textural and mineralogical analyses alone. However, it is fundamental for our understanding of breccia provenance to determine the source component of the matrix material. Whether the matrix is uniquely clastderived can be determined by geochemical fingerprinting. Trace elements that are immobile during weathering and alteration do not change their relative abundances. A contribution to the matrix from any source with an immobile trace element signature different from that of the clasts would appear as a perturbation of the trace element signature of the matrix.
Trace element analysis of bulk samples from clasts and matrix material in individual breccia units was undertaken in a fashion similar to that used by Brimhall and Dietrich (1987, doi:10.1016/0016-7037(87)90070-6) in analyzing soil provenance: (1) to help distinguish between sedimentary and volcanic breccias, (2) to determine the degree of mixing and depth of erosion in sedimentary breccias, and (3) to analyze the local provenance of the individual breccia components (matrix and clasts).
The following elements were analyzed by X-ray fluorescence (XRF): Rb, Sr, Ba, U, Zr, Cu, Zn, Ti, Cr, and V. Of these elements, Zr and Ti probably exhibit truly immobile behavior (Humphris and Thompson, 1978, doi:10.1016/0016-7037(78)90222-3 ). The remaining elements are useful as a reference for the extent of compositional change during the formation of matrix material (Brimhall and Dietrich, 1987, doi:10.1016/0016-7037(87)90070-6).
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 31.874600 * Median Longitude: 141.226250 * South-bound Latitude: 31.874200 * West-bound Longitude: 141.226000 * North-bound Latitude: 31.875000 * East-bound Longitude: 141.226500
Date/Time Start: 1989-04-04T12:00:00 * Date/Time End: 1989-04-16T17:00:00
Minimum Elevation: -3082.0 m * Maximum Elevation: -3070.0 m
Event(s):
125-786A  * Latitude: 31.875000 * Longitude: 141.226000 * Date/Time Start: 1989-04-04T12:00:00 * Date/Time End: 1989-04-04T12:00:00 * Elevation: -3070.0 m * Penetration: 166.5 m * Recovery: 84.95 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 166.5 m cored; 0 m drilled; 51 % recovery
125-786B  * Latitude: 31.874200 * Longitude: 141.226500 * Date/Time Start: 1989-04-04T12:00:00 * Date/Time End: 1989-04-16T17:00:00 * Elevation: -3082.0 m * Penetration: 828.6 m * Recovery: 190.07 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 72 cores; 666.1 m cored; 0 m drilled; 28.5 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEvent
2 Sample code/labelSample labelRigsby, Catherine ADSDP/ODP/IODP sample designation
3 Sample commentSample commentRigsby, Catherine A
4 ZirconiumZrmg/kgRigsby, Catherine AX-ray fluorescence (XRF)
5 StrontiumSrmg/kgRigsby, Catherine AX-ray fluorescence (XRF)
6 ZincZnmg/kgRigsby, Catherine AX-ray fluorescence (XRF)
7 NickelNimg/kgRigsby, Catherine AX-ray fluorescence (XRF)
8 ChromiumCrmg/kgRigsby, Catherine AX-ray fluorescence (XRF)
9 VanadiumVmg/kgRigsby, Catherine AX-ray fluorescence (XRF)
10 TitaniumTimg/kgRigsby, Catherine AX-ray fluorescence (XRF)
11 BariumBamg/kgRigsby, Catherine AX-ray fluorescence (XRF)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
386 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Sample label		3 
Sample comment		4 
Zr [mg/kg]		5 
Sr [mg/kg]		6 
Zn [mg/kg]		7 
Ni [mg/kg]		8 
Cr [mg/kg]		9 
V [mg/kg]		10 
Ti [mg/kg]		11 
Ba [mg/kg]
125-786A 125-786A-16X-CC,7-9Clast62168301984871162038<100
125-786A125-786A-19X-CC,11-13Matrix8898304391125601890<100
125-786B 125-786B-1R-1,14-15Clast60175261454051001506<100
125-786B125-786B-1R-1,58-59Clast and matrix7619622123293821300<100
125-786B125-786B-3R-1,36-38Matrix11013334150275541240<100
125-786B125-786B-5R-1,59-61Matrix88224231182501011831<100
125-786B125-786B-6R-1,31-34Matrix1682241164<501112097<100
125-786B125-786B-10R-1,15-16Clast50175221985601141536<100
125-786B125-786B-10R-1,35-37Matrix908419182567<501418<100
125-786B125-786B-12R-1,47-49Clast5814026193473<501506<100
125-786B125-786B-12R-1,47-49Matrix26193477<501506<100
125-786B125-786B-12R-1,83-86Clast11221026129400<501300<100
125-786B125-786B-12R-1,83-86Matrix6216838198633711595<100
125-786B125-786B-15R-2,146-148Matrix1662383043<50862333<100
125-786B125-786B-16R-1,105-108Clast862382332<501372186<100
125-786B125-786B-16R-1,120-121Clast922522621<501192008<100
125-786B125-786B-17R-1,31-34Matrix3843<50<502363<100
125-786B125-786B-19R-1,58-60Matrix743363880116823072<100
125-786B125-786B-21R1,65-68Matrix381822337<50<501713<100
125-786B125-786B-22R-3,121-123Clast882243043<501891861<100
125-786B125-786B-27R-1,15-18Clast1682312343<50772422<100
125-786B125-786B-27R-2,17-20Matrix7221049193629<501565<100
125-786B125-786B-41R-1,52-55Clast782241537<501571979<100
125-786B125-786B-41R-1,52-55Matrix1041612643<501682244<100
125-786B125-786B-41R-2,77-79Matrix621191521<501551300<100
125-786B125-786B-41R-4,35-37Clast7221026962281071418<100
125-786B125-786B-42R-1,25-28Clast70217301502551541654<100
125-786B125-786B-42R-1,25-28Matrix70266231933671731831<100
125-786B125-786B-46R-2,89-91Clast13818223751011311536<100
125-786B125-786B-48R-2,120-124Clast442036813910321671890<100
125-786B125-786B-49R-2,29-31Clast702171918710983501860<100
125-786B125-786B-49R-3,87-91Matrix58182301183911372008<100
125-786B125-786B-49R-4,60-64Clast961962380911361861<100
125-786B125-786B-49R-4,60-64Matrix4619630236502681270<100
125-786B125-786B-52R-1,90-93Clast9416119225521851093<100
125-786B125-786B-52R-1,90-93Matrix6211915300689651477<100
125-786B125-786B-55R-1,101-105Clast481403418259911311536<100
125-786B125-786B-56R-2,100-103Clast and matrix28039223225169612021359<100
125-786B125-786B-62R-1,49-52Clast and matrix160259343431101912041713<100