Citation:

seals-163860

Name: Documentation of Mn-deposits of western Sicily
Creator: Hugh C Jenkyns
Published: 1970
License: https://creativecommons.org/licenses/by/3.0/

Always quote citation above when using data! You can download the citation in several formats below.

Published: 1970 (exact date unknown) • DOI registered: 2016-03-23

RIS Citation BibTeX Citation Text Citation ShareShow Map Google Earth

Abstract:

Some marine iron pisolite beds from the Toarcian of western Sicily are described for the first time. These beds, which generally overlie the Liassic platform carbonates, are usually chocolate-brown in colour; they attain a maximum thickness of about 40 cm at one locality but are often tracable as centimetre-thick remanie horizons elsewhere. Their fauna comprises Tethyan ammonites, belemnites, gastropods, rare brachiopods, fish teeth, foraminifera and crinoid ossicles.

The pisoliths themselves contain calcite, limonite (goethite), haematite and, in rare cases, chamosite; electron-probe microanalysis shows that they are enriched in certain trace elements, particularly manganese, relative to many iron ooliths. The high content of trace elements suggests deposition in a pelagic environment, as do the faunal associations of this deposit; and, since fragments of sanidine trachyte are invariably associated with this lithology - sometimes even forming the cores of the pisoliths themselves - submarine volcanism and exhalations seem a likely source for the ferruginous and manganiferous material.

The stratigraphical position of the iron pisolite, often between two stromatolitic sediments, and the traces of boring algae in the pisoliths, suggest deposition within the photic zone, probably some tens of metres deep.

Source:

Grant, John Bruce; Moore, Carla J; 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

Further details:

Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN

Project(s):

NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)

Coverage:

Median Latitude: 37.871959 * Median Longitude: 13.183324 * South-bound Latitude: 37.834004 * West-bound Longitude: 12.959833 * North-bound Latitude: 37.952833 * East-bound Longitude: 13.366033

Minimum DEPTH, sediment/rock: 2.20 m * Maximum DEPTH, sediment/rock: 21.10 m

Event(s):

JENK2 * Latitude: 37.834004 * Longitude: 13.127690 * Elevation: 304.0 m * Location: Rocce Maranfusa, Sicily * Method/Device: Hammer (HAM)

JENK3 * Latitude: 37.852649 * Longitude: 13.122919 * Elevation: 243.0 m * Location: Monte Maranfusa, Sicily * Method/Device: Hammer (HAM)

JENK4 * Latitude: 37.855173 * Longitude: 13.366033 * Elevation: 1066.0 m * Location: Rocca Busambra, Sicily * Method/Device: Hammer (HAM)

Comment:

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.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Jenkyns, Hugh C
2	Identification	ID		Jenkyns, Hugh C
3	Location of event	Location		Jenkyns, Hugh C
4	Latitude of event	Latitude		Jenkyns, Hugh C
5	Longitude of event	Longitude		Jenkyns, Hugh C
6	DEPTH, sediment/rock	Depth sed	m	Jenkyns, Hugh C		Geocode
7	Depth, top/min	Depth top	m	Jenkyns, Hugh C
8	Depth, bottom/max	Depth bot	m	Jenkyns, Hugh C
9	Position	Position		Jenkyns, Hugh C	Visual description
10	Deposit type	Deposit type		Jenkyns, Hugh C
11	Quantity of deposit	Quantity		Jenkyns, Hugh C
12	Size	Size		Jenkyns, Hugh C
13	Sediment type	Sediment		Jenkyns, Hugh C
14	Comment	Comment		Jenkyns, Hugh C
15	File name	File name		Jenkyns, Hugh C
16	Uniform resource locator/link to image	URL image		Jenkyns, Hugh C

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

188 data points

Data

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

1 Event	2 ID	3 Location	4 Latitude	5 Longitude	6 Depth sed [m]	7 Depth top [m]	8 Depth bot [m]	9 Position	10 Deposit type	11 Quantity	12 Size	13 Sediment	14 Comment	15 File name	16 URL image
JENK2	JENK2-1	Rocce Maranfusa, Sicily	37.8340	13.1277	20.70	20.60	20.80	Buried	Mn nodule	Several	Large	Limestone	Massively bedded white limestone	Fig2A_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d002
JENK2	JENK2-2	Rocce Maranfusa, Sicily	37.8340	13.1277	20.80	20.80	20.80	Buried	Fe-Mn crust	1		Limestone	Massively bedded white limestone	Fig2A_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d002
JENK2	JENK2-3	Rocce Maranfusa, Sicily	37.8340	13.1277	21.10	21.00	21.20	Buried	Fe-Mn crust	Several		Limestone	Limestone with iron pisoliths and limonitic nodules	Fig2A_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d002
JENK3	JENK3-1	Monte Maranfusa, Sicily	37.8526	13.1229	20.55	20.50	20.60	Buried	Fe-Mn crust	1		Limestone	Compact fine grained limestone	Fig2B_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d004
JENK3	JENK3-2	Monte Maranfusa, Sicily	37.8526	13.1229	21.00	21.00	21.00	Buried	Fe-Mn crust	2		Limestone	Limestone with iron pisoliths and limonitic nodules	Fig2B_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d004
JENK4	JENK4-1	Rocca Busambra, Sicily	37.8552	13.3660	5.10	4.80	5.40	Buried	Mn nodule	Several	Large	Limestone	Compact fine grained limestone	Fig2C_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d015
JENK4	JENK4-2	Rocca Busambra, Sicily	37.8552	13.3660	5.50	5.40	5.60	Buried	Fe-Mn crust	Several		Limestone	Compact fine grained limestone	Fig2C_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d015
JENK4	JENK4-3	Rocca Busambra, Sicily	37.8552	13.3660	6.55	6.40	6.70	Buried	Fe-Mn crust	1		Limestone	Massively bedded white limestone	Fig2C_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d015
JENK5	JENK5-1	Monte Galiello, Sicily	37.8668	13.1826	5.25	5.20	5.30	Buried	Fe-Mn crust	1	Thick	Limestone	Massively bedded white limestone	Fig2D_Jenkyns2_1970.jpg	hdl:10013/epic.46903.d006
JENK7	JENK7-1	Monte Bonifato, Sicily	37.9528	12.9598	2.20	2.15	2.30	Buried	Mn nodule	Several	Large	Limestone	Compact fine grained limestone	Fig2B_Jenkyns_1970.jpg	hdl:10013/epic.46903.d003
JENK7	JENK7-2	Monte Bonifato, Sicily	37.9528	12.9598	2.30	2.30	2.30	Buried	Fe-Mn crust	1		Limestone	Compact fine grained limestone	Fig2B_Jenkyns_1970.jpg	hdl:10013/epic.46903.d003
JENK7	JENK7-3	Monte Bonifato, Sicily	37.9528	12.9598	2.70	2.60	2.80	Buried	Mn nodule	Several	Large	Limestone	Compact fine grained limestone	Fig2B_Jenkyns_1970.jpg	hdl:10013/epic.46903.d003
JENK7	JENK7-4	Monte Bonifato, Sicily	37.9528	12.9598	2.70	2.60	2.80	Buried	Fe-Mn crust	Several		Limestone	Compact fine grained limestone	Fig2B_Jenkyns_1970.jpg	hdl:10013/epic.46903.d003
JENK8	JENK8-1	Rocca Argenteria, Sicily	37.8703	13.3408	2.30	2.15	2.45	Buried	Mn nodule	Several	Large	Limestone	Compact fine grained limestone	Fig2A_Jenkyns_1970	hdl:10013/epic.46903.d001
JENK8	JENK8-2	Rocca Argenteria, Sicily	37.8703	13.3408	2.30	2.30	2.30	Buried	Fe-Mn crust	1		Limestone	Compact fine grained limestone	Fig2A_Jenkyns_1970	hdl:10013/epic.46903.d001
JENK8	JENK8-3	Rocca Argenteria, Sicily	37.8703	13.3408	3.20	2.60	3.80	Buried	Mn nodule	Several	Small	Limestone	Compact fine grained limestone	Fig2A_Jenkyns_1970	hdl:10013/epic.46903.d001
JENK8	JENK8-4	Rocca Argenteria, Sicily	37.8703	13.3408	3.75	3.60	3.90	Buried	Mn nodule	Several	Large	Limestone	Compact fine grained limestone	Fig2A_Jenkyns_1970	hdl:10013/epic.46903.d001
JENK8	JENK8-5	Rocca Argenteria, Sicily	37.8703	13.3408	4.15	4.10	4.20	Buried	Fe-Mn crust	1		Limestone	Massively bedded white limestone	Fig2A_Jenkyns_1970	hdl:10013/epic.46903.d001