The composite Sierra Bermeja Pluton (southern Iberian Massif): science, heritage and geoconservation

Figures & data

Table 1. Inventory of Geological Points of Interest (GPI).

N° GPI	Coord. (UTM zone 29N)		Description
	X	Y
GPI-01	731395.7	4325975.4	Neoproterozoic dioritoids
GPI-02	746042.3	4326708.9	Paleozoic shales. slates and quartzites
GPI-03	744905.3	4322601.3	Intrusive contact between monzogranites and host rocks
GPI-04	738039.9	4324331.9	Andalusite spotted hornfels
GPI-05	735972.4	4330687.4	Cenozoic cover
GPI-06	744876.8	4322667.8	Intrusion of MU into the OU (the Rugidero Berrocal)
GPI-07	744593.7	4322852.4	OU main type
GPI-08	744842.8	4322705.8	K-feldspar phenocrysts large accumulations (The Rugidero Berrocal)
GPI-09	741257.0	4329020.7	K-feldspar phenocrysts large accumulations
GPI-10	740853.9	4323779.4	Microgranular mafic magmatic enclaves
GPI-11	745493.0	4325834.1	OU local variety
GPI-12	745190.2	4325997.4	Sheet-by-sheet intrusions between the main type of the OU and its local variety
GPI-13	744208.3	4326525.5	Intrusion of MU into the OU
GPI-14	740363.8	4327180.8	Mixing/mingling relations between the MU and IU
GPI-15	736734.4	4327626.1	Mixing/mingling relations between the MU and IU
GPI-16	740774.4	4324875.0	MU main type
GPI-17	741751.6	4325037.4	MU main type
GPI-18	745440.4	4324367.9	MU local variety
GPI-19	743868.0	4323996.8	MU local variety
GPI-20	738828.1	4327985.1	IU main type
GPI-21	735835.3	4328694.3	IU main type
GPI-22	743934.1	4325161.2	IU local variety
GPI-23	738380.1	4328359.7	Vaugnerite series rocks
GPI-24	737667.2	4327342.9	Vaugnerite series rocks
GPI-25	742424.8	4323984.0	Lamprophyre dyke
GPI-26	743902.8	4324799.1	Lamprophyre dyke
GPI-27	744399.3	4324809.0	Aplite dyke
GPI-28	738511.4	4327835.7	Quartz dyke

Figure 1. Geographical map showing the location of the Sierra Bermeja Pluton.

Figure 2. Geological map of the Iberian Massif. The Nisa-Alburquerque-Los Pedroches Magmatic Alignment is emphasised. The subdivision of the Iberian Massif is based on Julivert, Marcos, and Truyols (1972); the extent of the Obejo-Valsequillo domain is based on Bandrés et al. (2004), Martín Parra, González Lodeiro, Martínez Poyatos, and Matas (2006) and Palacios et al. (2013); Variscan granitoids adapted from Rodríguez Fernández and Oliveira (2015); and major tectonic elements adapted from Díez Fernández and Arenas (2015).

Table 2. Key features of monzogranite types of the Sierra Bermeja Pluton.

	Outer Unit (OU)		Middle Unit (MU)		Inner Unit (IU)
	Main type	Local variety	Main type	Local variety	Main type	Local variety
Enclaves	Mafic and felsic magmatic; pelitic	Mafic and felsic magmatic; pelitic	–	–	–	–
Kfs phenocrysts	150–350/m^2	150–250/m^2	Occasional	Occasional	–	–
Groundmass crystal-syze	Medium to coarse	Fine to medium	Medium to coarse	Medium to coarse	Fine to medium	Fine to medium
Quartz	27–35%	26–38%	31–40%	33–39%	32–41%	31–38%
Kfs (groundmass)	15–28%	14–27%	24–33%	25–32%	22–30%	24–31%
Plagioclase	33–42%	34–45%	26–35%	25–33%	24–32%	25–32%
Cordierite	1–5%	1–3%	5–10%	1–5%	2–7%	1–3%
Biotite	6–11%	9–14%	3–6%	5–7%	1–4%	3–7%
Muscovite	0–1%	0–1%	0–2%	0–2%	2–8%	2–4%
Accessory minerals	Ap, Mnz, Zrn, Xtm, Tur, Ilm	Ap, Mnz, Zrn, Xtm, Tur, Ilm	Ap, Mnz, Zrn, Xtm, Tur, Ilm	Ap, Mnz, Zrn, Xtm, Tur, Ilm	Ap, Mnz, Zrn, Xtm, Tur, And, Ilm, Rt	Ap, Mnz, Zrn, Xtm, Tur, And, Ilm, Rt

Figure 3. (A) Sharp intrusive contact between the OU monzogranites and host rocks (GPI-03). (B) Dyke of MU intruding into the OU (GPI-06). (C) Moderately oriented Kfs phenocrysts in the OU main monzogranite type (GPI-07). (D) Mafic magmatic enclave including a K-feldspar phenocryst (GPI-10). (E) Scanned section of the MU main monzogranite type. (F) A detail picture of the IU main monzogranite type. (G) Tourmaline in pegmatite segregates. (H) Aplite dyke intruding into the IU.

Julivert, M. , Marcos, A. , & Truyols, J. (1972). L’évolution paléogéographique du NW de l’Espagne pendant l’Ordovicien-Silurien. Bulletin de la Société Géologique et minéralogique de Bretagne , 4 , 1–7.

 Google Scholar

Bandrés, A. , Eguíluz, L. , Pin, C. , Paquette, J. L. , Ordoñez, B. , Le Fèvre, B. , …  Gil Ibarguchi, J. I. (2004). The northern Ossa-Morena Cadomian batholith (Iberian Massif): magmatic arc origin and early evolution. International Journal of Earth Sciences , 93 (5), 860–885. doi: 10.1007/s00531-004-0423-6

 Web of Science ®Google Scholar

Martín Parra, L. M. , González Lodeiro, F. , Martínez Poyatos, D. , & Matas, J. (2006). The Puente Génave-Castelo de Vide shear zone (Southern Central Iberian Zone, Iberian Massif): Geometry, kinematics and regional implications. Bulletin de la Société Géologique de France , 177 (4), 191–202. doi: 10.2113/gssgfbull.177.4.191

 Web of Science ®Google Scholar

Palacios, T. , Eguíluz, L. , Apalategui, O. , Jensen, S. , Martínez-Torres, L. M. , Carracedo, M. , …  Martí, M. (2013). Mapa Geológico de Extremadura 1/350.000 y su memoria . Bilbao : Servicio Editorial de la UPV-EHU. 68×98 cm, p. 222.

 Google Scholar

Rodríguez Fernández, L. R. , & Oliveira, J. T. (2015). Mapa geológico de España y Portugal a escala 1:1.000.000. Instituto Geológico y Minero de España, Laboratório Nacional de Energia e Geologia de Portugal. Retreived from http://info.igme.es/cartografiadigital/geologica/Geologicos1MMapa.aspx?Id=Geologico1000_(2015)

 Google Scholar

Díez Fernández, R. , & Arenas, R. (2015). The late devonian Variscan suture of the Iberian massif: a correlation of high-pressure belts in NW and SW Iberia. Tectonophysics , 654 , 96–100. doi: 10.1016/j.tecto.2015.05.001

 Web of Science ®Google Scholar