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Geology, geochemistry, geophysics, mineral occurrences, and mineral resource assessment for the commonwealth of Puerto Rico

Frequently anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   Bawiec, Walter J., 1998, Geology, geochemistry, geophysics, mineral occurrences, and mineral resource assessment for the commonwealth of Puerto Rico: Open-File Report 98-38, Geological Survey (U.S.).

   Online Links:

   • <http://pubs.usgs.gov/of/1998/of98-038/>
   • <http://mrdata.usgs.gov/geology/pr.html>

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -67.27198

   East_Bounding_Coordinate: -65.575757

   North_Bounding_Coordinate: 18.518156

   South_Bounding_Coordinate: 17.928237

3. What does it look like?

   <http://mrdata.usgs.gov/catalog/images/OFR_98-38.png> (PNG)

   Reduced-size image of the geologic units and faults, (721 x 273 pixels)

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: 1998

   Currentness_Reference:

   The data, compiled over a long period of time, were assembled into the report published in 1998. The data were repackaged to facilitate web access in 2010.

5. What is the general form of this data set?

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-Polygon (8007)
      • Complete chain (12760)

   2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in decimal degrees.

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
      

7. How does the data set describe geographic features?

   PR_Fault.dbf

   Thrust faults

   LNTYPE

   Type of fault

   Value	Definition
   7	Thrust fault
   27	Concealed fault

   PR_Fault_N.dbf

   Normal faults

   LNTYPE

   Type of geologic fault

   Value	Definition
   0	(unknown)
   25	Normal fault

   PR_Geology.dbf

   Geologic units

   FMATN

   Geologic formation symbol. Initial capital letter indicates age: K = Cretaceous; T = Tertiary; Q = Quaternary

   Value	Definition
   KJa	Amphibolite
   KJas	Amphibolite-Serpentinite
   KJb	Spilitized Basalt
   KJc	Cajul Basalt
   KJm	Mariquita Chert
   KJs	Serpentinite
   Kabcj	Formations A, B, C, and J
   Kac	Achiote Conglomerate
   Kal	Alonso Formation
   Kap	Avispa and Perchas Formations undivided
   Kav	Avispa Formation
   Kba	Barrazas Formation
   Kbo	Boqueron Basalt
   Kca	Cariblanco Formation
   Kcag	Granodiorite of Caguas Pluton
   Kcam	Camarones Sandstone
   Kcan	Cancel Breccia
   Kcar	Carraizo Breccia
   Kcb	Cambalache Formation
   Kce	Celada Formation
   Kcg	Cerro Gordo Lava
   Kcn	Canovanas Formation
   Kco	Concepcion Formation
   Kcoa	Coamo Formation
   Kcot	Cotui Limestone
   Kctt	Cotorra Tuff
   Kd	Daguao Formation
   Kdh	Diorite-hornblendite-gabbro
   Kdi	Diorite
   Ke	El Rayo Formation
   Keo	El Ocho Formation
   Kf	Figuera Lava
   Kfa	Fajardo Formation
   Kfd	Figuera Lava and Daguao Formation Interbedded
   Kfr	Friales Formation
   Kg	Guynabo Formation
   Kh	Hato Puerco Formation
   Ki	Infierno Formation
   Kib	Intrusive Daguao Breccia
   Kja	Jayuya Tuff
   Kl	Lajas Formation
   Klm	La Muda Formation
   Kln	Los Negros Formation
   Klo	Lomas Formation
   Km	Melones Limestone
   Kma	Magueyes Formation
   Kmag	Martin Gonzales Lava
   Kmal	Malo Breccia
   Kmam	Mameyes Formation
   Kman	Manicaboa Formation
   Kmar	Maravillas Formation
   Kmc	Granodiorite of Morovis and Ciales Stocks
   Kmo	Monacillo Formation
   Kp	Parguera Limestone
   Kpa	Pajaros Tuff
   Kpe	Penoñes Limestone
   Kper	Perchas Formation
   Kpgg	Granodiorite of the plutonic complex of Punta Guayanes
   Kpgq	Quartz diorite of plutonic complex of Punta Guayanes
   Kpgqm	Quartz monzonite of plutonic complex of Punta Guayanes
   Kpi	Pitahaya Formation
   Kpo	Pozas Formation
   Kpob	Two pyroxene olivine basalt
   Kpsg	Granodiorite of the plutonic complex of Punta Guayanes and granodiorite of San Lorenzo undivided
   Kpsq	Quartz diorite of plutonic complex of Punta Guayanes and of the granodiorite of San Lorenzo
   Kr	Robles Formation
   Kra	Río Abajo Formation
   Krp	Río de la Plata Sandstone
   Ks	Sabana Grande Formation
   Ksl	Granodiorite-Quartz Diorite of San Lorenzo
   Kslg	Mixed granodiorite-diorite of San Lorenzo complex and diorite hornblendite-hornblende gabbro
   Kslq	Quartz Diorite Facies of Granodiorite of San Lorenzo
   Kso	Santa Olaya Lava
   Kt	Torrecilla Breccia
   Kta	Tabonuco Formation
   Kte	Tetuan Formation
   Kto	Tortugas Andesite
   Ku	Granodiorite-quartz diorite of the Utuado batholith
   Kv	Vista Alegre Formation
   QTs	Blanket Sand Deposits
   Qa	Alluvium
   Qb	Beach Deposits
   Ql	Landslide Deposits
   Qs	Swamp Deposits
   TKa	Anon Formation
   TKahp	Augite-hornblende porphyry
   TKal	Lago Garzas-Anon Formations Interbedded
   TKam	Anon and Maricao Formations Interbedded
   TKamo	Anon and Monserrate Formations Interbedded
   TKap	Augite andesite porphyry
   TKas	Alkali syenite
   TKat	Augite trachybasalt
   TKay	Anon and Yauco Formations Interbedded
   TKaym	Anon, Yauco, and Maricao Formations Interbedded
   TKci	Cibuco Formation
   TKda	Dacite
   TKdi	Diorite
   TKg	Gabbro
   TKgm	Granodiorite quartz monzonite
   TKgu	Guaracanal Formation
   TKh	Hornblende quartz-diorite porphyry
   TKha	Hydrothermally altered rock
   TKhda	Hornblende dacite
   TKk	Quartz keratophyre
   TKl	Lago Garzas Formation
   TKlam	Lago Garzas, Anon, and Maricao Formations Interbedded
   TKly	Lago Garzas and Yauco Formations Interbedded
   TKm	Maricao Formation
   TKmly	Maricao, Lago Garzas, and Yauco Formations Interbedded
   TKmv	Metavolcanic Rocks
   TKmy	Maricao and Yauco Formations Interbedded
   TKn	Naranjito Formation
   TKqd	Quartz diorite-granodiorite
   TKy	Yauco Formation
   Ta	Aguada Limestone
   Tay	Aymamon Limestone
   Tc	Cuevas Formation
   Tca	Carreras Siltstone
   Tcb	Cibao Formation
   Tcbg	Guajataca Member
   Tcbga	Almirante Sur Sand Lentil
   Tcbm	Montebello Limestone Member
   Tcbmi	Miranda Sand Member
   Tcbq	Quebrada Arenas Member
   Tcbr	Río Indio Limestone Member
   Tcm	Camuy Formation
   Tco	Corozal Limestone
   Td	Dacite
   Tfb	Fault Breccia
   Tg	Guayo Formation
   Tga	Gabbro
   Tgua	Guanajibo Formation
   Thp	Hornblende quartz-diorite
   Tj	Jicara Formation
   Tjd	Juana Diaz Formation
   Tjo	Jobos Formation
   Tl	Los Puertos Formation
   Tla	Lares Limestone
   Tm	Monserrate Formation
   Tmu	Mucarbones Sand
   Tor	Ortiz Formation
   Tpa	Palmarejo Formation
   Tpo	Ponce Limestone
   Tr	Río Culebrinas Formation
   Tra	Raspaldo Formation
   Trd	Río Descalabrado Formation
   Trhp	Rhyodacite porphyry
   Trp	Río Piedras Siltstone
   Ts	San Sebastian Formation
   Ty	Yunes Formation
   af	Artificial fill

   COLR

   Color index in shadeset

   Range of values
   Minimum:	0
   Maximum:	3

   COLR2

   Color index in shadeset

   Range of values
   Minimum:	0
   Maximum:	255

   SHADE

   Color index in shadeset

   Range of values
   Minimum:	0
   Maximum:	24

   PROV

   Province identifier code number

   Range of values
   Minimum:	0
   Maximum:	183

   PR_Gravity.dbf

   Bouguer gravity anomaly

   COLR2

   Color index from shadeset

   Range of values
   Minimum:	46
   Maximum:	176

   PR_Magnetic.dbf

   Contour intervals of magnetic anomaly

   NVALUE

   Magnetic anomaly

   Range of values
   Minimum:	-350
   Maximum:	2950

   COLR2

   Color index from shadeset

   Range of values
   Minimum:	57
   Maximum:	189

   PR_terrane.dbf

   Geologic terranes

   PROV

   Province indicator

   Range of values
   Minimum:	0
   Maximum:	183

   prunit.txt

   Detailed information about the geologic units

   symbol

   Map symbol for the formation, a value of PR_Geology:fmatn

   name

   Name of the formation or rock unit

   age

   General age of the formation or rock unit, expressed as chronostratigraphic unit names

   descript

   Description of the formation or rock unit, drawn from the printed report

   ref

   Bibliographic references used to map and document the formation or rock unit; abbreviated form commonly found in scientific reports should match references given in bib.txt

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Bawiec, Walter J.

2. Who also contributed to the data set?

   Tom Kress and Peter Schweitzer repackaged the data to facilitate web access in 2010.

3. To whom should users address questions about the data?
   Thomas H Kress
   USGS -- GD
   12201 Sunrise Valley Drive
   Mail Stop 954
   Reston, VA 20192-0002
   USA
   

   703-648-6328 (voice)
   703-648-6383 (FAX)
   thkress@usgs.gov
   

Why was the data set created?

This publication attempts to apply much of the geologic, geochemical, geophysical, and mineral occurrence information to a single objective focused on producing a mineral resource assessment for the Commonwealth of Puerto Rico. However, the value of this publication lies not within the results of the mineral resource assessment nor within the interactive PDF files which can be viewed on the screen, but within the geologic, geochemical, geophysical, and mineral occurrence digital map coverages and databases which can be used for their own unique applications.

How was the data set created?

1. From what previous works were the data drawn?

2. How were the data generated, processed, and modified?

3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: none

Use_Constraints: none

1. Who distributes the data set? (Distributor 1 of 1)
   USGS Information Services
   Box 25286, Denver Federal Center
   Denver, Colorado 80255-0046
   USA
   

   1-888-ASK-USGS (voice)
   1-303-202-4695 (FAX)
   infoservices@usgs.gov
   

2. What's the catalog number I need to order this data set?

   USGS Open-File Report 98-38

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Geologic units and structural features in format WMS (version 1.3.0)
     Network links:	<http://mrdata.usgs.gov/services/pr?service=WMS&request=GetCapabilities&version=1.1.1>

     Data format:	Geologic units and structural features in format WFS (version 1.0.0)
     Network links:	<http://mrdata.usgs.gov/services/pr?service=WFS&request=GetCapabilities&version=1.0.0>

     Data format:	Geologic units and structural features in format Shapefile (version 1.0)
     Network links:	<http://mrdata.usgs.gov/geology/pr/ofr-98-38.zip>

   • Cost to order the data:

Who wrote the metadata?

Dates:

Last modified: 26-Feb-2010

Metadata author:

Peter N Schweitzer
USGS ER GD
Geologist
12201 Sunrise Valley Drive
Reston, VA 20192-0002
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)