# Marinduque Island, Philippines Coral Heavy Metals and Oxygen Isotope Data
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#                World Data Service for Paleoclimatology, Boulder 
#                                  and 
#                     NOAA Paleoclimatology Program 
#             National Centers for Environmental Information (NCEI)
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# Template Version 4.0
# Encoding: UTF-8
# NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. 
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# Description/Documentation lines begin with #
# Data lines have no #
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# NOAA_Landing_Page:  https://www.ncei.noaa.gov/access/paleo-search/study/1893
#   Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata.
#
# Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-coral-1893.json
#   Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata.
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# Data_Type: Corals and Sclerosponges
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# Dataset_DOI: 10.25921/5844-dk90
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# Science_Keywords:
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# Resource_Links
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# Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/west_pacific/marinduque2004-ulan99-metals-noaa.txt
#   Data_Download_Description: NOAA Template File; Ulan Reef Sample 1999 Heavy Metal Data
#
# Related_Online_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/west_pacific/marinduque2004-supp.txt
#   Related_Online_Description: Supplemental File; Raw Density and Oxygen Isotope Data Used for Chronology
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# Contribution_Date
#   Date: 2003-07-01
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# File_Last_Modified_Date
#   Date: 2025-07-15
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# Title
#   Study_Name: Marinduque Island, Philippines Coral Heavy Metals and Oxygen Isotope Data
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# Investigators
#   Investigators: David, C.P.
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# Description_Notes_and_Keywords
#   Description: Marinduque Island, Philippines Coral Heavy Metals and Oxygen Isotope Data. All samples are from the Island of Marinduque in the Philippines (13deg 26'N  121deg 49' E).
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# Publication 
#   Authors: David, C.P.
#   Published_Date_or_Year: 2003
#   Published_Title: Heavy metal concentrations in growth bands of corals: a record of mine tailings input through time (Marinduque Island, Philippines)
#   Journal_Name: Marine Pollution Bulletin
#   Volume: 46
#   Edition: 
#   Issue: 2
#   Pages: 187-196
#   Report_Number: 
#   DOI: 10.1016/S0025-326X(02)00315-6
#   Online_Resource: 
#   Full_Citation:
#   Abstract: The impact of copper mining along the western coast of Marinduque Island was investigated. Historic input of mine tailings in the coastal region was traced through variations in heavy metal concentrations in Porites growth bands. Five samples were collected from three reefs showing different modes and extent of exposure to mine tailings. Baseline metal concentrations in Porites were established using a coral from a reef that is least exposed to contamination. The lowest mean values of Cu (0.7 μg/g), Mn (0.8 μg/g), and Zn (1.0 μg/g) were calculated from annual skeletal bands representing five years of growth. Conversely, a sample from a reef adjacent to an old tailings stockpile displayed consistently elevated metal values in its growth bands. Mean Cu, Mn, and Zn values for this coral are 3.1, 1.0 and 1.8 μg/g, respectively. Corals from the Ihatub reef showed a distinct metal concentration peak in their 1996 growth ring. These peaks coincide with a documented release of mine tailings in the Ihatub area during that year. Other metal peaks observed in coral samples correlate with years of high precipitation which may have resulted in increased sediment transport in the region. The metals are presumed to be mostly bound to the aragonite lattice of the coral skeleton, however, contribution from incorporated detrital materials to the observed metal signal (mainly of Fe) could not be easily discounted.
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# Funding_Agency 
#   Funding_Agency_Name: Geological Society of America
#   Grant: student grant
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# Funding_Agency 
#   Funding_Agency_Name: Stanford University
#   Grant: McGee grant
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# Funding_Agency 
#   Funding_Agency_Name: Department of Science and Technology of the Philippine Government
#   Grant: 
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# Site_Information 
#   Site_Name: Marinduque Island
#   Location: Philippines
#   Northernmost_Latitude: 13.43
#   Southernmost_Latitude: 13.43
#   Easternmost_Longitude: 121.82
#   Westernmost_Longitude: 121.82
#   Elevation_m: 
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# Data_Collection  
#   Collection_Name: david2003 ulan99 metals
#   First_Year: 1993
#   Last_Year: 1999
#   Time_Unit: CE
#   Core_Length_m: 
#   Parameter_Keywords: trace metals
#   Notes:
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# Chronology_Information
#   Chronology: 
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# Variables  
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# PaST_Thesaurus_Download_Resource:  https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf
#   PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format.
#
# Data variables follow that are preceded by "##" in columns one and two.
# Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data)
#
## samp_id	sample identification,,,,,corals and sclerosponges,,,C,
## depth_mm	depth,,,millimeter,,corals and sclerosponges,,,N,
## cu	copper,Porites lobata,,microgram per gram,,corals and sclerosponges,,,N,
## cu_stdev	copper,Porites lobata,one standard deviation,microgram per gram,,corals and sclerosponges,,,N,
## fe	iron,Porites lobata,,microgram per gram,,corals and sclerosponges,,,N,
## fe_stdev	iron,Porites lobata,one standard deviation,microgram per gram,,corals and sclerosponges,,,N,
## mn	manganese,Porites lobata,,microgram per gram,,corals and sclerosponges,,,N,
## mn_stdev	manganese,Porites lobata,one standard deviation,microgram per gram,,corals and sclerosponges,,,N,
## zn	zinc,Porites lobata,,microgram per gram,,corals and sclerosponges,,,N,
## zn_stdev	zinc,Porites lobata,one standard deviation,microgram per gram,,corals and sclerosponges,,,N,
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# Data:
# Data lines follow (have no #)
# Data line format - tab-delimited text, variable short name as header
# Missing_Values:
samp_id	depth_mm	cu	cu_stdev	fe	fe_stdev	mn	mn_stdev	zn	zn_stdev
ulanx99-1	2	3.206947681		16.87142555		1.292099132		1.760220292	
ulanx99-2	4.5	1.29471696		1.545418121		1.572892221		0.721195123	
ulanx99-3_1	7	2.259359457	0.102325651	3.687018176	1.798250455	1.719755868	0.012013229	0.915885661	0.193966359
ulanx99-4_1	10	4.660936025	0.216190629	31.04320032	2.211266412	2.108119392	0.039090792	1.521832635	0.146561779
ulanx99-5	12	1.614787431		1.406284658		0.814048059		0.851756007	
ulanx99-6_1	14	1.491251348	0.030846822	3.198633874	0.271369554	0.901307245	0.002438544	1.013649577	0.068283917
ulanx99-7	17	2.69441402		2.025504616		0.997496479		2.257862619	
ulanx99-8	20	2.830482115		4.300155521		0.818429238		1.940124417	
ulanx99-9_1	22.5	3.011340421	0.109953379	4.878232356	4.222090654	0.84253466	0.052392188	2.696728185	0.299806278
ulanx99-10	25	1.571044922		1.091308594		0.673828125		1.382446289	
ulanx99-11	27.5	1.53917478		7.153453871		0.703137073		1.515994437	
ulanx99-12_1	30	1.539778586	0.051527934			0.725309722	0.006641315	1.270951405	0.074348857
ulanx99-13	33	2.438269216				0.794179116		2.303583869	
ulanx99-14	36	2.204619202		0.755869441		0.84939874		2.111089903	
ulanx99-15	39	2.349503214		1.507890123		0.986265342		2.42402104	
ulanx99-16_1	41	3.057732161	0.146277358	4.15075467	0.507573015	1.371630505	0.012951597	2.347322072	0.09949411
ulanx99-17_1	43	2.487574666	0.055401031	0.348798504	0.026423784	1.01361087	0.001801103	1.931580867	0.054785463
ulanx99-18_1	49	5.251671841	0.132058013	1.664588278	0.081702629	1.040541303	0.001285251	2.82092511	0.312229149
ulanx99-19	53	3.31114291		0.016798357		0.879114042		1.526784048	
ulanx99-20_1	55	3.96096294	0.38915223	0.439007252	0.274479446	0.942388718	0.008581996	1.661728272	0.088847575
ulanx99-21_1	57	4.902241126	0.334391942	0.292284761	0.124242841	1.081097629	0.001857258	2.386117579	0.353352416
ulanx99-22	60	8.908595574		0.208495496		0.905704437		2.056599577	
ulanx99-23_1	63	3.941781888	0.127847607	0.772929694	0.6730027	0.82003716	0.020621208	1.615918747	0.063628183