Table 1. Sample descriptions and stop locations

Sample		Stop				Rock									N latitude	W longitude 	Elevation (m)

Rabinal complex (Maya block)
G1s			G1				quartzitic paragneiss						15°11.2’		91°32.7’		1990	
G18s		G1				phyllonitic migmatitic gneiss				15°11.2’		91°32.7’		1990
G19s		G1				hornblende-epidote schist					15°11.2’		91°32.7’		1990
G20s		G45				quartz-rich migmatitic augengneiss			15°17.4’		91°29.0’		
G21s		G3=G46			epidote schist								15°18’*		91°29.6’*	
G27s		G56, G57		biotite-granite gneiss						15°19.9’		91°37.2’		
GM8s		GM33=G8		greenschist-grade granite mylonite			15°12.2’		91°11.8’		
GM37			phyllonite								15°17.2’*	91°05.8’*	
GM38			granodiorite								15°19.061’	91°10.374’	–
GM13s		GM42			(?ortho)gneiss							15°23.977’	91°58.790’	1100* 
Chuacús complex
G10s		G29				calcsilicate layer in marble					14°57.2’		90°13.2’		
G11s		G30				migmatitic two-mica orthogneiss				14°58.0’		90°14.3’		1070
G12s 		G31, G19		retrograde mylonitic orthogneiss				15°00.3’		90°14.7’		1300
G14s		G32				augengneiss								15°01.8’		90°13.1’		
5PB-8		5PB-8			micro-diorite								15°15.06’	89°11.51’	
5PB-9b		5PB-9			phyllitic para- and orthogneiss intercalation	15°14.02’	89°15.51’	
			5PB-10			marble mylonite							15°13.08’	89°14.58’	
5PB-13a		5PB-13			garnet-bearing mica schist					15°00.41’	89°58.22’	
5PB-13b		5PB-13			garnet amphibolite							15°00.41’	89°58.22’	
5PB-14		5PB-14			hornblende-mica-chlorite schist				15°00.37’	89°57.56’	480
5CO-1		5CO-1			two-mica orthogneiss						15°06.05’	90°24.03’	–
5CO-3			orthogneiss								15°06.09’	90°27.05’	–
5CO-4b		5CO-4			two mica, garnet ?paragneiss				15°02.43’	90°29.41’	1229
5CO-5a		5CO-5			garnet amphibolite (eclogite) with two mica	14°57.05’	90°29.11’	970
schist intercalations								
5CO-5b		5CO-5			deformed meta-pegmatite					14°57.05’	90°29.11’	970
5CO-6b		5CO-6			garnet orthogneiss							14°55’*		90°31’*		950*
824			824				two-mica gneiss							15°00.9246’	90°22.8978’	2038
825			825				garnet-muscovite gneiss					14°58.8036’	90°20.0832’	823
827			827				quartz-rich micaschist						15°00.0930’	90°20.2200’	1319
846			846				garnet amphibolite (eclogite)				15°00.0612’	90°32.4480’	1681
			854				(ultra)mylonitic gneiss, pegmatite			15°03.954’	89°36.118’	284
			856				augengneiss, biotite granite, aplite			15°00.715’	89°43.997’	–
			876				intercalation of low-grade meta-sedimentary 	14°55.115’	90°05.952’	360
rocks with schists and serpentinite			
854F		854				migmatitic paragneiss 						15°03.96’	89°36.12’	290
880C		880				white mica rich shear zone in metapelite		14°58.992’	90°28.882’	1200
883B		883				paragneiss with sinistral s–c fabic			14°58.167’	90°32.581’	1187 
885A		885				pegmatite								14°53.989’	90°33.211’	883
			880-886			variegated Chuacús gneisses along 			14°58°992’	90°28.882’ to
the El Chol and Aqua Caliente rivers			14°54°813°	90°31.423’
887C		887				quartzo-feldspatic paragneiss				14°56.090’ 	90°30.101’	864
Metasomatized southern Chuacús complex
G6s			G26				metasomatized basement (phyllonite)			14°55.4’		90°04.4’		
G7s			G27				metasomatized, retrogressed biotite gneiss,	14°55.0’		90°08.1’		
							pseudotachylite vein in pull-apart tension gash
			5C-35			chlorite phyllite (metasomatic basement)		14°57.13’	89°49.45’	–
5C-36a		5C-36			metasomatized biotite gneiss (phyllonite),		14°55.47’	89°59.27’	372	
860B		860, 5PB-15 		metasomatized garnet micaschist (phyllonite)	14°57.344’	89°57.774’	378	
876				intercalation of low-grade meta-sedimentary 	14°55.115’	90°05.952’	360
rocks with schists and serpentinite			
Sanarate complex
G3s			G23				retrograde basement imbricated with phyllite,	14°45’†		90°20’†		
epidote schist	
G5s			G24				amphibolite								14°47.3’*	90°17’*		
5G-1a		5G-1			chlorite-epidote-hornblende schist			14°47.46’	90°15.17’	
853				amphibolite								14°45.254’	90°08.307’	855
870, 871			amphibolite								14°45.3’		90°08.5’		880				
North and South El Tambor complexes
			G28				serpentinite								14°56.3’*	90°11.2’*	–	
			G34=GM14		mélange of serpentinite, ophicalcite, volcanics	14°54.38’	90°09.39’	–
			G35				serpentinite								14°54.3’*	90°09.4’*	–
			G38				serpentinite								14°54.2’†	90°11’†		–
			5PB-7			serpentinite								15°23.04’	89°01.16’	–
			GM11 to GM13	serpentinite								1.5 km outcrop stretch
																	14°54.801’	90°07.911’	–
			852				mélange of clastics and greenschist			14°44.487’	90°04.892’	766
			855				mélange of phyllite, serpentinite, blueschist	14°49.635’	89°48.008’	686
			864				meta-siltstone, serpentinite, granite dike		14°51.492’	89°48.725’	349
			869				meta-clastics; granite dikes					14°43.620’	90°03.842’	990
Foreland fold-and-thrust belt; Paleozoic to Tertiary cover; south and north of Motagua fault zone
G2				pyroclastics and welded tuff					15°15’†		91°29’†		
			G4				meta-conglomerate; Chicol Formation		15°21.6’*	91°35.6’*	–
G5				intercalation of volcanics and clastics			15°22.6’*	91°37.3’*	–
G39=GM23		massive limestone							15°18.5’*	90°29.1’*	–
G40=GM25		serpentinite–Coban limestone contact			15°18.55’	90°29.11’	–
G41=GM26		serpentinite–Coban limestone contact			15°16.4’*	90°28.58’*	–
G42				serpentinite–Coban limestone contact			15°16.449’	90°28.585’	–
G43				Cretaceous limestone						15°18.5’*	90°28’*		–			
G48				boundary limestone to serpentinite			15°22’*		91°27’*		–
G49				serpentinite								15°22’*		91°27.5’*	–
G50				pyroclastics								15°21.3’*	91°29.35’*	–
G51				pyroclastics								15°21.45’*	91°26.5’*	–
G54				Cretaceous limestone						15°24.7’*	91°49’*		–
			G55				Permian Chochal limestone					15°29.6’*	91°45.5’*	–
			G58				cataclastic, dark limestone, dolomite			15°24.3’*	91°39.8’*	–
			G59				Cretaceous thick-bedded limestone			15°38’*		91°58.6’*	–
			G60				Late Cretaceous limestone					15°36.1’		91°51.5’		–
			G61,62			slate-limestone intercalation					close to G60				–
			GM1			rhyolite									14°43,6’*	90°32.3’*	–
			GM2			volcanics									14°46.951’	90°17.509’	–
			GM3			Subinal red beds							14°51.807’	90°04.706’	–
			GM4,5			?Cretaceous limestone						14°49.065’	90°09.301’	–
			GM7			?Cretaceous limestone						14°50.387’	90°07.966’	–
			GM9			Subinal red beds							14°53.003’	90°03.632’	–
			GM10			pyroclastics								14°54.891’	90°05.297’	–
GM1s		GM15			quartz phyllite							15°06’†		90°18’†				
			GM22			Permian	Chochal limestone					15°16’†		90°17’†		–
GM9s		GM35			phyllite of ?Permian Tactic Fm.				15°17.7’* 	91°04.7’*	12501
			GM36			meta-conglomerate (Sacapulas Fm.)			15°19’*		91°03.2’*	–
			GM44			volcanics									15°23.4’*	91°38.1’*	–
GM45			volcanics									15°14.3’*	91°38.3’*	
			GM46			volcanics									15°24.35’	91°38.3’		–
			GM47			volcanics									15°25.148’	91°38.799’	–
GM49			volcanics									15°24’†		91°42.8’†	–
GM50			Permian Chochal limestone					15°25’†		91°47’†		–
			GM51			Permian Chochal limestone					west of GM50			–
			GM52 			Permian Chochal limestone					15°25’†		91°51’†		–
			5H-14			red beds and volcanic						14°55.52’	88°58.18’	–
			865				meta-conglomerate (Sacapulas Fm.)			15°11.117°	90°25.527’	852
			866				meta-conglomerate (Sacapulas Fm.)			15°08.919°	90°24.352’	895
			868				ultramafic rocks and Coban limestone		15°16.601’	90°29.246’	935
			872				Subinal red beds							14°51.619’	90°07.796’	434
			873				Subinal red beds							14°51.633’	90°07.079’	452
Western Las Ovejas complex, Guatemala
5C-2c		5C-2			amphibolite								14°51.46’	89°48.79’	
			5C-3			phyllitic paragneiss						14°50.38’	89°48.35’	–
5C-5		5C-5			phyllite, ?San Diego phyllites 				14°43.13’	89°35.16’	
			5C-15			mylonitic paragneiss						14°43.14’	89°35.55’	–
5C-23a		5C-23			granite									14°57.35’	89°32.30’	194
5C-23c		5C-23			biotite gneiss (migmatite)					14°57.35’	89°32.30’	194
5C-23d		5C-23			hornblende-biotite gneiss					14°57.35’	89°32.30’	194
5C-26c		5C-26			garnet amphibolite 						14°56.17’	89°37.53’	194
5C-26d		5C-26			migmatitic biotite gneiss, amphibolite		14°56.17’	89°37.53’	194
5C-27a		5C-27			garnet-bearing migmatite, leucosome			14°57.18’	89°40.32’	286		
5C-28b		5C-28			biotite gneiss with deformed pegmatite dike	14°54.32’	89°43.44’	~300
5C-33		5C-33			biotite gneiss								14°57.29’	89°32.38’	
5C-37a		5C-37			migmatitic biotite gneiss					14°51.32’	89°44.25’	488
5C-37b		5C-37			phyllitic biotite-granite gneiss (migmatite  	14°51.32’	89°44.25’	488
in Chiquimula granite)							
5C-37d		5C-37			garnet micaschist							14°51.32’	89°44.25’	488
5C-37e		5C-37			leucogranite injected into shear zone			14°51.32’	89°44.25’	488
			5PB1-4			gneiss, marble, leucogranite, amphibolite		15°02.12’	89°18.11’ to
																	15°05.34’	89°21.15’
5PB-5a		5PB-5			amphibolite in migmatite					15°05.17’	89°17.05’	440
5PB-5c		5PB-5			orthogneiss (large xenolith in granite)			15°05.17’	89°17.05’	440
5PB-6b		5PB-6			granite close to augengneiss					15°08.36’	89°11.11’	226
Eastern Las Ovejas complex, Honduras
			5H-1			micaschist, migmatitic biotite gneiss			15°45.25’	87°52.20’	– 
5H-2a		5H-2			leucogranite with localized shear zones		15°43.56’	87°53.54’	
5H-3a		5H-3			tonalitic granite with local shear zones		15°41.09’	87°56.18’	16
5H-4b		5H-4			biotite–amphibolite pegmatite in leucogranite	15°39.08’	87°56.57’	
5H-4c		5H-4			greenschist facies shear zone in amphibolite	15°39.08’	87°56.57’	
5H-4d		5H-4			undeformed amphibolite					15°39.08’	87°56.57’	
			5H-7			phyllite over orthogneiss					15°25.48’	88°01.22’	–
			5H-8			migmatitic orthogneiss						15°19.50’	88°18.07’	–
5H-9a		5H-9			migmatitic orthogneiss						15°20.38’	88°21.54’	199
5H-11a		5H-11			greenschist-grade orthogneiss				15°12.83’	88°36.58’	–
			5H-12			paragneiss, marble							15°12.09’	88°37.37’	–
92RN412	92RN412		granitic gneiss							15°40.4’*	87°56.7’*	–
93LP522		93LP522			granite									15°28.3’		88°02.4’		–
94SA602	94SA602		amphibolite								15°39.1’		87°56.9’		–
Metamorphic basement of the central Chortis block, Honduras
SF1D		SF1D			weakly deformed granite					14°33.85’*	86°07.09’*  	–
92QO404	92QO404		tonalitic granite-gneiss						14°47.35’*	87°01.73’*	–
86TA100	86TA100		(?ortho) augen schist						14°40.22’†	86°56.0’†	940
Granitoids of the arc complex
			5H-5, 6			granite									15°35.39’	87°57.05’ to
																	15°33.50’	87°58.04’
5C-6		5C-6			granite (Chiquimula batholith)				14°46.58’	 89°34.55	719
5C-11		5C-11			granodiorite (Chiquimula batholith)			14°47.03’	89°35.40’	779	
5C-13		5C-13			granodiorite (Chiquimula batholith)			14°47.21’	89°34.21’	
5C-21		5C-21			subvolcanic granite (Chiquimula batholith)	14°52.95’	89°30.95’	
5C-32		5C-32			granite									14°59.57’	89°17.22’	~870
5H-5		5H-5			granite									15°35.39’	87°57.05’	88
5H-13		5H-13			subvolcanic granite						14°55.15’	88°45.44’	789
GM14s		GM43			Miocene granite							15°24.429’	91°59.951’	~1100
GM15s		GM43			augengneiss mylonite; float					15°24.4’		91°59.9’		~1100
Southern Mexico
ML-18						migmatite								18°00’*		97°50’*		–
ML-37						mylonitic gneiss							15°52’*		96°29’*		–
MU-12						Cruz Grande migmatitic gneiss				16°48.00’	99°07.88’	76
MU-13						La Palma = Las Piñas gneiss mylonite		17°04.9’		99°29.7’		359
ML-39						Pochutla mylonitic gneiss					15°51.8’		96°29.78’	275
PA3-4						mylonitic gneiss							15°40’*		93°10’*		501
CB35						mylonitic gneiss							15°42.29’	93°10.40’	801
CB31						diorite									15°43.87’	93°14.32’	571
CA34						tonalite									16°06.05’	93°40.45		2301
PI28-1						mylonitic gneiss							15°42’*		93°12’*		651
CB-8						meta-psammite							16°16.891’	93°36.877’	770
CB-12						orthogneiss								16°20.35’	93.32.66’	690
CB-16						orthogneiss								16°05.51’	93°11.01’	590
CB-17						orthogneiss								16°04.38’	93°12.35’	590
CB-28						orthogneiss								16°07.15’	93°41.56’	220
CMP-5						orthogneiss								16°06.60’	93°26.33’	670
CMP-13						orthogneiss								16°02.47’	93°13.62’	630
TP-1016						granodiorite								16°13.95’	93°35.20’	1016
TP-1320						granodiorite								16°12.56’	93°35’		1320
TP-1800						granite									16°12’		93°36.1’		1800
TP-1990						granite									16°11.8’		93°36.06’	1990
TP-2347						tonalite									16°11.6’		93°36.6’		2347
TP-2513						granodiorite								16°11.7’		93°36.68’	2513

*imprecise coordinates determined with GPS in the 1990s
†imprecise coordinates determined from maps