Barzalosa Formation

Geological formation in the Colombian Andes From Wikipedia, the free encyclopedia

The Barzalosa Formation (Spanish: Formación Barzalosa, Pgb, Pgba) is a fossiliferous geological formation of the Upper Magdalena Valley and the bounding foothills of the Central Ranges and Eastern Ranges of the Colombian Andes. The formation consists of conglomerates, sandstones and siltstones. The Barzalosa Formation probably dates to the Late Paleogene to Early Neogene period; Oligocene to Early Miocene epochs, and has an approximate thickness of 360 metres (1,180 ft). Fossils of Balanerodus logimus, Lophiodolodus chaparralensis, Xenastrapotherium chaparralensis, Protheosodon sp. and Proadinotherium sp. have been uncovered from the formation in Chaparral, Tolima.

TypeGeological formation

UnderliesHonda Gp., Carmen de Apicalá Conglomerate

OverliesLa Tabla Fm., Olini Gp., Seca Fm.

Thickness~360 m (1,180 ft)

Quick facts Type, Underlies ...

Barzalosa Formation
Stratigraphic range: ~Mid Eocene-Oligocene or Oligocene-Early Miocene ~40–20 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Underlies	Honda Gp., Carmen de Apicalá Conglomerate
Overlies	La Tabla Fm., Olini Gp., Seca Fm.
Thickness	~360 m (1,180 ft)
Lithology
Primary	Conglomerates
Other	Sandstones, siltstones, shale, gypsum
Location
Coordinates	4°21′50.2″N 74°47′29.8″W
Approximate paleocoordinates	2.7°N 71.2°W / 2.7; -71.2
Region	Upper Magdalena Valley Central & Eastern Ranges Andes
Country	Colombia
Type section
Named for	Barzalosa
Named by	Scheibe
Location	Girardot
Year defined	1934
Coordinates	4°21′50.2″N 74°47′29.8″W
Region	Cundinamarca
Country	Colombia
Paleogeography of Northern South America 35 Ma, by Ron Blakey

Etymology

The formation was defined by Scheibe in 1934 and named after Barzalosa, a vereda of Girardot, Cundinamarca. Cáceres and Etayo elevated the "Pisos de Barzalosa" to a formation in 1969.^[1]

Description

Lithologies

The Barzalosa Formation consists of conglomerates, sandstones and siltstones.^[2] In parts, the formation contains shale beds and gypsum.^[3]

Stratigraphy and depositional environment

The approximately 360 metres (1,180 ft) thick Barzalosa Formation overlies the Olini Group and the Seca Formation in the west and is overlain by the Honda Group.^[2] In the east towards Fusagasugá, the formation overlies the La Tabla Formation and is overlain by the Carmen de Apicalá Conglomerate.^[4] As the formation does not contain foraminifera, the age is difficult to establish, but has been estimated to be Oligocene to Early Miocene,^[2] or Middle Eocene to Oligocene.^[5] The depositional environment has been interpreted as alluvial fans and braided rivers.^[6]

Fossil content

More information Location, Department ...

Location	Department	Fossils	Notes
Alto San José, Chaparral	Tolima	Balanerodus logimus	^[7]
		Lophiodolodus chaparralensis	^[8]
		Xenastrapotherium chaparralensis	^[9]
		Protheosodon sp.	^[10]
		Proadinotherium sp.	^[11]
		Megalonychoidae indet., Gavialidae indet.	^[12]

Outcrops

Type locality of the Barzalosa Formation to the southwest of the Bogotá savanna

The Barzalosa Formation is apart from its type locality found in Tocaima and to the east of Agua de Dios,^[1] and on the western side of the Magdalena River around Chaparral, Tolima.^[12]

Regional correlations

More information Ma, Age ...

Stratigraphy of the Llanos Basin and surrounding provinces
Ma	Age	Regional events	Catatumbo	Cordillera	proximal Llanos	distal Llanos	Putumayo	VSM	Environments	Maximum thickness	Petroleum geology	Notes
0.01	Holocene	Holocene volcanism Seismic activity	alluvium								Overburden
1	Pleistocene	Pleistocene volcanism Andean orogeny 3 Glaciations	Guayabo	Soatá Sabana	Necesidad	Guayabo	Gigante Neiva		Alluvial to fluvial (Guayabo)	550 m (1,800 ft) (Guayabo)		^[13]^[14]^[15]^[16]
2.6	Pliocene	Pliocene volcanism Andean orogeny 3 GABI		Subachoque			Gigante Neiva
5.3	Messinian	Andean orogeny 3 Foreland		Marichuela			Caimán	Honda				^[15]^[17]
13.5	Langhian	Regional flooding	León	hiatus	Caja	León	Caimán		Lacustrine (León)	400 m (1,300 ft) (León)	Seal	^[16]^[18]
16.2	Burdigalian	Miocene inundations Andean orogeny 2	C1		Carbonera C1		Ospina		Proximal fluvio-deltaic (C1)	850 m (2,790 ft) (Carbonera)	Reservoir	^[17]^[16]
17.3			C2		Carbonera C2				Distal lacustrine-deltaic (C2)		Seal
19			C3		Carbonera C3				Proximal fluvio-deltaic (C3)		Reservoir
21	Early Miocene	Pebas wetlands	C4		Carbonera C4			Barzalosa	Distal fluvio-deltaic (C4)		Seal
23	Late Oligocene	Andean orogeny 1 Foredeep	C5		Carbonera C5		Orito		Proximal fluvio-deltaic (C5)		Reservoir	^[14]^[17]
25	Late Oligocene		C6		Carbonera C6		Orito		Distal fluvio-lacustrine (C6)		Seal
28	Early Oligocene		C7		C7		Pepino	Gualanday	Proximal deltaic-marine (C7)		Reservoir	^[14]^[17]^[19]
32	Oligo-Eocene		C8	Usme	C8	onlap			Marine-deltaic (C8)		Seal Source	^[19]
35	Late Eocene		Mirador	Usme	Mirador				Coastal (Mirador)	240 m (790 ft) (Mirador)	Reservoir	^[16]^[20]
40	Middle Eocene			Regadera				hiatus
45	Middle Eocene
50	Early Eocene		Socha		Los Cuervos				Deltaic (Los Cuervos)	260 m (850 ft) (Los Cuervos)	Seal Source	^[16]^[20]
55	Late Paleocene	PETM 2000 ppm CO₂	Los Cuervos	Bogotá	Los Cuervos			Gualanday	Deltaic (Los Cuervos)	260 m (850 ft) (Los Cuervos)	Seal Source
60	Early Paleocene	SALMA	Barco	Guaduas	Barco		Rumiyaco	Gualanday	Fluvial (Barco)	225 m (738 ft) (Barco)	Reservoir	^[13]^[14]^[17]^[16]^[21]
65	Maastrichtian	KT extinction	Catatumbo	Guadalupe				Monserrate	Deltaic-fluvial (Guadalupe)	750 m (2,460 ft) (Guadalupe)	Reservoir	^[13]^[16]
72	Campanian	End of rifting	Colón-Mito Juan					Monserrate				^[16]^[22]
83	Santonian						Villeta/Güagüaquí
86	Coniacian
89	Turonian	Cenomanian-Turonian anoxic event	La Luna	Chipaque	Gachetá	hiatus			Restricted marine (all)	500 m (1,600 ft) (Gachetá)	Source	^[13]^[16]^[23]
93	Cenomanian	Rift 2		Chipaque	Gachetá				Restricted marine (all)	500 m (1,600 ft) (Gachetá)	Source
100	Albian			Une	Une		Caballos		Deltaic (Une)	500 m (1,600 ft) (Une)	Reservoir	^[17]^[23]
113	Aptian		Capacho	Fómeque			Motema	Yaví	Open marine (Fómeque)	800 m (2,600 ft) (Fómeque)	Source (Fóm)	^[14]^[16]^[24]
125	Barremian	High biodiversity	Aguardiente	Paja					Shallow to open marine (Paja)	940 m (3,080 ft) (Paja)	Reservoir	^[13]
129	Hauterivian	Rift 1	Tibú- Mercedes	Las Juntas	hiatus				Deltaic (Las Juntas)	910 m (2,990 ft) (Las Juntas)	Reservoir (LJun)	^[13]
133	Valanginian		Río Negro	Cáqueza Macanal Rosablanca					Restricted marine (Macanal)	2,935 m (9,629 ft) (Macanal)	Source (Mac)	^[14]^[25]
140	Berriasian		Girón	Cáqueza Macanal Rosablanca					Restricted marine (Macanal)	2,935 m (9,629 ft) (Macanal)	Source (Mac)
145	Tithonian	Break-up of Pangea	Jordán	Arcabuco	Buenavista Batá		Saldaña		Alluvial, fluvial (Buenavista)	110 m (360 ft) (Buenavista)	"Jurassic"	^[17]^[26]
150	Early-Mid Jurassic	Passive margin 2	La Quinta	Montebel Noreán	hiatus		Saldaña		Coastal tuff (La Quinta)	100 m (330 ft) (La Quinta)		^[27]
201	Late Triassic	Passive margin 2	Mucuchachi	Montebel Noreán			Payandé					^[17]
235	Early Triassic	Pangea		hiatus							"Paleozoic"
250	Permian	Pangea
300	Late Carboniferous	Famatinian orogeny						Cerro Neiva ()				^[28]
340	Early Carboniferous	Fossil fish Romer's gap		Cuche (355-385)	Farallones ()			Cerro Neiva ()	Deltaic, estuarine (Cuche)	900 m (3,000 ft) (Cuche)
360	Late Devonian	Passive margin 1	Río Cachirí (360-419)	Cuche (355-385)	Farallones ()			Ambicá ()	Alluvial-fluvial-reef (Farallones)	2,400 m (7,900 ft) (Farallones)		^[25]^[29]^[30]^[31]^[32]
390	Early Devonian	High biodiversity	Floresta (387-400) El Tíbet					Ambicá ()	Shallow marine (Floresta)	600 m (2,000 ft) (Floresta)
410	Late Silurian	Silurian mystery	Floresta (387-400) El Tíbet
425	Early Silurian	Silurian mystery	hiatus
440	Late Ordovician	Rich fauna in Bolivia	San Pedro (450-490)		Duda ()
470	Early Ordovician	First fossils	San Pedro (450-490)	Busbanzá (>470±22) Chuscales Otengá	Guape ()		Río Nevado ()	Hígado () Agua Blanca Venado (470-475)				^[33]^[34]^[35]
488	Late Cambrian	Regional intrusions	Chicamocha (490-515)	Quetame ()	Ariarí ()		SJ del Guaviare (490-590)	San Isidro ()				^[36]^[37]
515	Early Cambrian	Cambrian explosion		Quetame ()				San Isidro ()				^[35]^[38]
542	Ediacaran	Break-up of Rodinia		pre-Quetame		post-Parguaza		El Barro ()	Yellow: allochthonous basement (Chibcha terrane) Green: autochthonous basement (Río Negro-Juruena Province)		Basement	^[39]^[40]
600	Neoproterozoic	Cariri Velhos orogeny	Bucaramanga (600-1400)				pre-Guaviare					^[36]
800	Neoproterozoic	Snowball Earth										^[41]
1000	Mesoproterozoic	Sunsás orogeny			Ariarí (1000)			La Urraca (1030-1100)				^[42]^[43]^[44]^[45]
1300		Rondônia-Juruá orogeny			pre-Ariarí	Parguaza (1300-1400)		Garzón (1180-1550)				^[46]
1400			pre-Bucaramanga					Garzón (1180-1550)				^[47]
1600	Paleoproterozoic					Maimachi (1500-1700)		pre-Garzón				^[48]
1800		Tapajós orogeny				Mitú (1800)						^[46]^[48]
1950		Transamazonic orogeny				pre-Mitú						^[46]
2200		Columbia
2530	Archean	Carajas-Imataca orogeny										^[46]
3100	Archean	Kenorland
Sources

Legend

group
important formation
fossiliferous formation
minor formation
(age in Ma)
proximal Llanos (Medina)^{[note 1]}
distal Llanos (Saltarin 1A well)^{[note 2]}

Notes

[1]
based on Duarte et al. (2019)^[49], García González et al. (2009),^[50] and geological report of Villavicencio^[51]
[2]
based on Duarte et al. (2019)^[49] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009^[52]

References

[1]
Acosta et al., 2002, p.49
[2]
Acosta et al., 2002, p.50
[3]
Acosta & Ulloa, 2001, p.56
[4]
Acosta & Ulloa, 2001, p.52
[5]
Acosta & Ulloa, 2001, p.57
[6]
Acosta et al., 2002, p.51
[7]
Balanerodus logimus in the Paleobiology Database
[8]
Lophiodolodus chaparralensis in the Paleobiology Database
[9]
Xenastrapotherium chaparralensis in the Paleobiology Database
[10]
Protheosodon in the Paleobiology Database
[11]
Proadinotherium in the Paleobiology Database
[12]
Chaparral Alto José in the Paleobiology Database
[13]
García González et al., 2009, p.27
[14]
García González et al., 2009, p.50
[15]
García González et al., 2009, p.85
[16]
Barrero et al., 2007, p.60
[17]
Barrero et al., 2007, p.58
[18]
Plancha 111, 2001, p.29
[19]
Plancha 177, 2015, p.39
[20]
Plancha 111, 2001, p.26
[21]
Plancha 111, 2001, p.24
[22]
Plancha 111, 2001, p.23
[23]
Pulido & Gómez, 2001, p.32
[24]
Pulido & Gómez, 2001, p.30
[25]
Pulido & Gómez, 2001, pp.21-26
[26]
Pulido & Gómez, 2001, p.28
[27]
Correa Martínez et al., 2019, p.49
[28]
Plancha 303, 2002, p.27
[29]
Terraza et al., 2008, p.22
[30]
Plancha 229, 2015, pp.46-55
[31]
Plancha 303, 2002, p.26
[32]
Moreno Sánchez et al., 2009, p.53
[33]
Mantilla Figueroa et al., 2015, p.43
[34]
Manosalva Sánchez et al., 2017, p.84
[35]
Plancha 303, 2002, p.24
[36]
Mantilla Figueroa et al., 2015, p.42
[37]
Arango Mejía et al., 2012, p.25
[38]
Plancha 350, 2011, p.49
[39]
Pulido & Gómez, 2001, pp.17-21
[40]
Plancha 111, 2001, p.13
[41]
Plancha 303, 2002, p.23
[42]
Plancha 348, 2015, p.38
[43]
Planchas 367-414, 2003, p.35
[44]
Toro Toro et al., 2014, p.22
[45]
Plancha 303, 2002, p.21
[46]
Bonilla et al., 2016, p.19
[47]
Gómez Tapias et al., 2015, p.209
[48]
Bonilla et al., 2016, p.22
[49]
Duarte et al., 2019
[50]
García González et al., 2009
[51]
Pulido & Gómez, 2001
[52]
García González et al., 2009, p.60

Bibliography

Acosta, Jorge E.; Guatame, Rafael; Caicedo A., Juan Carlos; Cárdenas, Jorge Ignacio (2002), Mapa Geológico de Colombia - Plancha 245 - Girardot - 1:100,000 - Memoria Explicativa, INGEOMINAS, pp. 1–92
Acosta, Jorge E.; Ulloa, Carlos E. (2001), Mapa Geológico de Colombia - Plancha 246 - Fusagasugá - 1:100,000 - Memoria Explicativa, INGEOMINAS, pp. 1–77

Maps

Acosta, Jorge E.; Guatame, Rafael; Torres, Oscar; Solano, Frank (1999), Plancha 245 - Girardot - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06
Acosta, Jorge E.; Ulloa, Carlos E. (1998), Plancha 246 - Fusagasugá - 1:100,000, INGEOMINAS, p. 1, retrieved 2017-06-06