75°10'W

75°10'W

75°20'W

75°20'W

75°30'W

75°30'W

7°20'N7°20'N

7°10'N7°10'N

1 2 3 4 5 6 7 8 9

H

G

F

E

D

C

B

A

1.280. 1.280.

1.285. 1.285.

1.290. 1.290.

1.295. 1.295.

1.300. 1.300.

1.305. 1.305.

1.310. 1.310.

1.315. 1.315.

835.

835.

840.

840.

845.

845.

850.

850.

855.

855.

860.

860.

865.

865.

870.

870.

875.

875.

880.

880.

REPÚBLICA DE COLOMBIA - Departamento de Antioquia PLANCHA 105 - Valdivia

INDICE DE LOCALIZACIÓN

Escala 1: 100.000

©1975 - INGEOMINAS

Base cartográfica tomada de las planchas a escala 1:100.000 del IGAC - 2008Proyección Conforme de Gauss

DATUM MAGNA SIRGASORIGEN EN LA ZONA BOGOTÁ

Coordenadas Geográficas: 4°35'46,3215'' N, 74°04'39.0285'' WCoordenadas Planas: N = 1'000.000, E = 1'000.000

PLANCHA 105 - Valdivia

949392

117

106

116

105

115

104

Por:

Jairo Álvarez A., Héctor Rico H., Hernán Vásquez, INGEOMINAS,en colaboración con Robert B. Hall y Lawrence V. Blade,

U.S. Geological Survey

835.

000

m.E

Qal

ALLUVIUM Stream - valley deposits, mostlyunconsolidadted poorly sorted polymictgravel; locally gold-bearing

T

UNDIFFERENTIATED CLASTIC SEDIMENTS

Moderately well consolidated but friable

local lignite bedssandstone, conglomerate, mudstone, and shale;

Pnp

MICACEOUS GNEISS

Gray - quartz-feldsparmica paragneiss, locallywith graphite flakes and garnet. The oldest

(Cambrian (?)-Silurian (?) but a Precambrianunit on the map, probably early Paleozoic

age is possible

Tal

Pa

AMPHIBOLITE

Elongate bodies of uncertain origin. May includepara-amphibolite as well as orthoamphibolite

ALLUVIUM Remnants of stream-channeldeposits, poorly to moderately well consoli-

dated, preserved on upland terraces; locallygold-bearing

Tap

ANDESITE PORPHYRY - Andesine phenocrystsin felty groundmass; single hypabyssal intrusivelens along Romeral Fault

Kat

FELSIC TONALITE - Light-gray medium-grainedbiotite tonalite

KaKsh

LA SOLEDAD FORMATION

Ksh, Argillite-shale facies. Dark-gray very fine

argillite; local breccia layers may be turbiditesgrained finey laminated quartzose shale and

Ka, Arenite facies. Basal unit of gray arkosic

in the argillite-shale faciesquartz-pebble and quartz-cobble conglomerate

Kg

MAFIC INTRUSIVE ROCKS

Kg, Metagabbro. Medium-to fine-grined green-stone, locally foliated; composed of stronglysaussuritized calcic plagioclase and uralitizedpyroxene

SERPENTINITE

Ultramafic bodies, mostly serpentinized, believedprobably contemporaneous with Lower Cretaceousmetagabbro; locally contains asbestos

Krv

METABASALT - Massive submarine basalt flowsaltered to greenstone; sodic feldspar common(spilitic?)

PALEOZOIC INTRUSIVE ROCKS

Pmt, Puqui Metatonalite. Medium -to dark-gray rock with composition and texture oftonalite, but locally containing accessorygarnet, hypersthene, sillimanite, and cordierite;associated with micaceous pargneiss. K-Arage 239+7 m.y._

Pei

VALDIVIA GROUP

Pes, Quartz-sericite schist. Dark-gray to blackfine-grained quartzose schist with very thin

graphite dust pigmentlaminae of sericite, biotite, and chlorite;

Pec, Chlorite-actinolite schist. Medium-todark-grayish green fine-grained schist com-posed mainly of chlorite, actinolite, albite,

and epidote; sphene and magnetite accessoryminerals; manganese oxide stain common onweathered surfaces

Pei, Intercalated schists. Subequally intercalated

Neither type is clearly dominantquartz-sericite and chlorite-actinolite schist.

Pmt Pnm

Pnm, Porphyrobastic adamellite gneiss. Syntec-tonic intrusive dark-gray quartz-feldspar gneisswith large porphyroblasts of orthoclase. Ageuncertain, but possibly contemporancous withPuqui Metatonalite

Pnf, Feldspathic gneiss. Light-to dark-gray me-

mon accessory minerals; local minor acces-rite in darker bands; garnet and graphite com-

sory cordierite and sillimanite

spar-quartz paragneiss with biiotite and chlo-dium-to coarse-grained layered sodic feld-

Pnf

Pes Pec

Ks

ROCAS ESTRATIFICADAS

ROCAS ÍGNEAS

PA

LEO

ZO

ICO

PR

EC

ÁM

BR

ICO

CU

AT

ER

NA

RIO

TE

RC

IAR

IO

Cre

táce

o su

perio

rC

retá

ceo

infe

rior

CR

ET

ÁC

EO

ME

SO

ZO

ICO

CE

NO

ZO

ICO

0 1 2 3 4 5 6 7 8 9 100,5Km

880.

000

m.E

1.280.000 m.N

1.000

2.000

3.000

0

1.000

2.000

3.000

0

AA'

Río

Nec

hí

Alto La Tolda

Fal

la R

omer

al

Río

Cau

ca

PesPnmPeiPes

PeiKgPecPecPmt

PnpPaPaPnpPmtPei

Pnp

Pnp

Pa Pes

Kg

Kat

MetrosMetros

Geología de laPlancha 105

Valdivia

LEYENDA GEOLÓGICA

1. Jairo Álvarez A.

2. Alfredo Andrade M.

Interpretación fotogeológica por Taissir Kassem

INDICE DE PARTICIPACIÓN

74°0

4'3

9,02

85'

' W

4º35'46,3215'' N

3, 8 122, 6, 7 9

5 2, 5, 6 ,7

1 ,12 1, 6

4, 9, 11 9 1

3, 8, 10

3, 8, 9

BASE CARTOGRÁFICA

Área construida

Banco de arena

Drenaje sencillo, canal

Curva de nivel

Carretera pavimentada

Drenaje doble, laguna, cuerpo de agua

CONTACTOS Y FALLAS EN ROCAS METAMÓRFICAS

Falla inferida

Falla definida

Falla cubierta

Foliación inclinada

Lineamiento fotogeológico

Camino, sendero

Carretera sin pavimentar

¹

¸ Diaclasa inclinada

DIACLASAS

Ä Diaclasa vertical

RASGOS GEOMORFOLÓGICOS, RECURSOS NATURALES Y OTROS

3. Alfonso Arias T.

4. Jaime Durán G.

7. Gilberto Guarín C.

8. Darío Mosquera T.

9. Francisco Mosquera M.

MINAS Y MANIFESTACIONES MINERALES

ß Mina activa

Minerales y metales económicos:asb: Asbesto

Transformada a Datum MAGNA SIRGAS2013

Contacto inferido

Minerales metamórficosAp: Andalusita porfiroblásticaC: CordieritaG: GranateSi: Silimanita

Foliación verticalX�

Q

Manifestación mineral

10. Jorge E. Muñoz C.

5. Ricardo Escobar R.

6. Alejandro Gómez P.

11. Alfonso Otero

12. Darío Velásquez H.

ESTRUCTRAS PLEGADAS

F Anticlinal definido

Sinclinal definidoM <> Punto de muestreo para datación radiométrica

7

7

77

7

77

7

77

77

7

7

7

7

7

7

7

7

77

77

7

7

7

7

77 7

77

7

7

77

7

77

7

7

77

7

7

7

1.280.000 m.N

1.320.000 m.N

Aureola de contacto intrusivo! ! ! ! ! ! ! ! ! !

! ! ! ! ! ! ! ! ! !

1.320.000 m.N

880.

000

m.E

835.

000

m.E

Ministerio de Minas y EnergíaServicio Geológico Colombiano

República de Colombia