Appendix 1

Table 1: Quantitative dataset displaying the location of each Pink Stripe- Dog Biscuit Sequence outcrop studied. The table indicates the locations of the measured thicknesses (m) of each member identified.

Location	Coordinates (DDM)		Member Thickness (m)
Location	Longitude	Latitude	Pink Stripe	Coroco	La Piña	Cactus	Las Eras	Rómpelo	Las Vigas	Dog Biscuit
Linde Vineyard Whole	-16.44908	28.2126	1	1.5	1.4	0.2	1.3
Linde Vineyard Upper	-16.44946	28.2125						0.75	0.5	0.5
Roadside Car Park	-16.42711	28.2019	0.75	1.6	0.8		1.8	0.3	0.23	0.3
Madriguera Vineyard	-16.43202	28.2515
Fasnia Scoria Cone Lower	-16.43348	28.23175	1.2	2	1.2
Fasnia Scoria Cone Upper	-16.434201	28.2323613					2.13	0.65	0.5	0.15
Barranco del Callo	-16.54949	28.09838			0.75		1.35
El Pino	-16.46825	28.20032			1.25	0.18	2.1
Las Carretas	-16.4619	28.20911	0.6	1.7	1.4	0.21	1.85
		Average Thickness	0.89	1.70	1.13	0.20	1.76	0.57	0.41	0.32
		Max Thickness	1.2	2	1.4	0.21	2.13	0.75	0.5	0.5

Appendix 2

Table 2: Quantitative dataset displaying the location of each Vegas Sequence outcrop studied. The table indicates the location of the measured thicknesses (m) of each member identified.

Las Vegas Formation		Coordinates (DDM)
		Longitude	Latitude
		-16.54697	28.14822
Member Thickness (m)	Unnamed Pumice Layer (1)	1.8
	Paleo Soil/Ignimbrite (1)	1.68
	Las Vegas	0.6
	Paleo Soil (2)	0.8
	Unnamed Pumice Layer (2)	0.25
	Mena	1.1
	Paleo Soil with unnamed Pumice Bands (1)	3.15
	Blanquitos	2.67
	Paleo Soil with unnamed Pumice Bands (2)	1.66

Appendix 3

Table 3: Qualitative dataset of the relative distance from the Guajara volcano vent from the locations where the maximum thickness of the named member was identified.

Location	Coordinates (DDM)		Member	Max Thickness (m)	Distance From Vent (Km)
Location	Longitude	Latitude	Member	Max Thickness (m)	Distance From Vent (Km)
Fasnia Scoria Cone Lower	-16.43348	28.23175	Pink Stripe	1.2	19.88
Fasnia Scoria Cone Lower	-16.43348	28.23175	Coroco	2	19.88
Las Carretas	-16.4619	28.20911	La Piña	1.4	16.75
Las Carretas	-16.4619	28.20911	Cactus	0.21	16.75
Fasnia Scoria Cone Upper	-16.434201	28.2323613	Las Eras	2.13	19.91
Linde Vineyard Upper	-16.44946	28.2125	Rómpelo	0.75	18.12
Linde Vineyard Upper	-16.44946	28.2125	Las Vigas	0.5	18.12
Fasnia Scoria Cone Upper	-16.434201	28.2323613	Las Vigas	0.5	19.91
Linde Vineyard Upper	-16.44946	28.2125	Dog Biscuit	0.5	18.12

Appendix 4

Table 4: Fingerprint dataset showing the characteristics of each named member within the Pink Stripe- Dog Biscuit Sequence.

Pumice Fall Deposit	Pink Stripe	Coroco	La Piña	Cactus	Las Eras	Rómpelo	Las Vigas	Dog Biscuit
Characteristics
Average Thickness (m)	0.89	1.7	1.13	0.2	1.76	0.57	0.41	0.32
Max Grain Size (cm)	≤7	≤4	≤3	≤4	≤6	≤3	≤3	≤4
Average Grain Size (cm)	~2	~2	~1	~1.5	~2	~2	~1.5	~2
Grain Gradation	Coarse-Fine-Coarse	Coarse (25cm) -Fine-Coarse	Coarse-Fine-Coarse-Fine-Coarse	None-observed	Fine-Coarse	Coarsening Upwards	Fining Upwards	Yes
Grain Sorting	Moderately Sorted	Well Sorted	Well sorted	Moderately Sorted	Poorly Sorted	Poorly Sorted	Moderately Sorted	Moderately Sorted
Matrix Type	Clast Supported	Clast Supported	Clast Supported	Clast Supported	Clast Supported	Clast Supported	Clast Supported	Clast Supported
Composition of Pumice	Grey with brownish tint	Light Grey	Dark Grey with greenish tint	Grey with greenish tint	White/grey- greenish tint inside rocks	Cream/brown colour	Cream/orange colour	Cream/yellow pumice
Pumice clasts >5cm	Yes	N/A	N/A	N/A	Yes	N/A	N/A	N/A
Stratifications/ Bedding in member	Band in middle (fine-coarse-fine)	2 bands of coarse pumice in top half	Alternating coarse-fine bands (5 total)	Homogenous	Homogenous	No bedding	Homogenous	Homogenous
Lithics in Rocks	Yes	Yes	Yes	None-observed	None-observed	None-observed	None-observed	None-observed
Oxides in Rocks	Yes	None-observed	None-observed	None-observed	Yes	None-observed	Yes	None-observed
Bands in Rocks	None-observed	None-observed	None-observed	None-observed	None-observed	None-observed	Yes	None-observed
Max Lithics Size (cm)	≤2	≤0.5	≤1 (obsidian ≤0.4)	≤0.5	≤4	≤1	≤1	≤0.5
Minerals Present	Microcrystals	Sanidine/ volcanic glass	Sanidine	None-observed	Sanidine/ volcanic glass	None-observed	None-observed	None-observed
Lithics % Area	5%	In coarse ~15%. In fine-coarse ~2%	5%	3%	6-7%	3-4%	2%	2%

Appendix 5 Table 5: Fingerprint dataset showing the characteristics of each identified member (both named and unnamed), within the Vegas Sequence.

Pumice Fall Deposit	Unnamed Pumice Layer	Paleo Soil/ Ignimbrite (1)	Las Vegas	Paleo Soils (2)	Unnamed Pumice Layer (2)	Mena (Heavily Altered)	Paleo Soils with unnamed pumice bands (1)	Blanquitos	Paleo Soils with unnamed pumice bands (2)
Characteristics
Average Thickness (m)	1.8	1.68	0.6	0.8	0.25	1.1	3.15	2.67	1.66
Max Grain Size (cm)	4	4	3	2	2.5	2.5	1.57	4	1.5
Average Grain Size (cm)	~2	~2	~2	~1	~1.5	~2	~0.64	~2	~0.63
Grain Gradation	None Observed	Fining Upwards	Fining Upwards	None-observed	None-observed	Coarsening Upwards	Fine (paleo soils) - Coarse (pumice bands)	Coarse-Fine-Coarse	Fine-Coarse-Fine-Coarse
Grain Sorting	Moderately Sorted	Well Sorted	Well Sorted	Poorly Sorted	Poorly Sorted	Moderately Sorted	Well Sorted	Well Sorted	Well Sorted
Matrix Type	Clast Supported	Matrix supported	Clast Supported	Matrix Supported	Matrix Supported	Matrix Supported	Matrix supported (paleo soil) Clast Supported (pumice bands)	Clast Supported	Matrix supported (paleo soil) Clast Supported (pumice bands)
Colour of Pumice	Dark grey/ greenish tint	N/A	White Pumice- Grey/Black pumice	Weathered Pumice	Light grey Pumice	Grey/ brown Pumice	Brown/ cream pumice	White/pale green Pumice	Cream-orange pumice
Pumice clasts >5cm	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N\A
Stratifications/ Bedding in member	White banding (Water Table)	Homogenous	Top- Black/Green Pumice Band. Bottom-Fine grained band	Homogenous	Homogenous	Well Stratified	Well Stratified	Homogenous	Well stratified
Lithics in Rocks	None-observed	None-observed	Yes	N/A	None-observed	None-observed	None-observed	Yes-obsidian	None-observed
Oxides in Rocks	Yes	None-observed	Yes	N/A	Yes	None-observed	None-observed	None-observed	Yes
Bands in Rocks	None Observed	None-observed	Yes	N/A	None-observed	None-observed	None-observed	Black/green bands in some	Found in pumice layers
Max Lithics Size (cm)	≤5	≤5	≤1	N/A	N/A	≤1	N/A	≤0.5	≤0.5
Minerals Present	Sanidine/ volcanic glass	None-observed	Sanidine/ volcanic glass	N/A	None-observed	Microcrystals	Biotite in 1 pumice clast. Sanidine/ volcanic glass	Microcrystals	Microcrystals/ Sanidine
Lithics % Area	3-4%	2%	3-4%	N/A	N/A	5%	N/A	3%	2%

Appendix 6

Table 6: Qualitative dataset displaying the outcrop’s locations, the access to these, and the named members situated at these outcrops.

Name	Coordinates		Access	Description	Present layers
Name	Longitude	Latitude	Access	Description	Present layers
Las Vegas	-16.54697	28.14822	North to Las Vegas settlement next to the c Las Vegas Road	Road outcrop	Las Vegas, La Mena, Blanquitos
Madriguera Vineyard	-16.43202	28.2515	From TF-28 and dirt roads	Abandoned Vineyard	Zarza or Coroco?
Linde Vineyard	-16.44946	28.2125	From TF-28 and dirt roads	Cultivated Vineyard	Pink stripe, Coroco, La Pina, Las Eras, Rómpelo, Las Vigas, Dog Biscuit
Fasnia Scoria Cone	-16.43348	28.2323613	From TF-620 and Ctra. los Roques	Bottom of the Fasnia Scoria Cone, towards Barranco Del Morito.	Coroco, La Pina, Las Eras, Rómpelo, Las Vigas, Dog Biscuit
Barranco del Callo	-16.54949	28.09838	From TF-636 and dirt roads	Abandoned Quarry	La Pina, Las Eras/Moradas
El Pino	-16.46825	28.20032	TF-28 road after passing the bridge over Barranco del Helecho to North-east direction	Road outcrop	Top of Coroco, La Pina, Cactus, Las Eras
Roadside Car Park	-16.42711	28.2019	Directly next to TF-622, and in front of Las Eras bus stop	Car Park	Pink stripe, Coroco, La Pina, Las Eras
Las Carretas	-16.4619	28.20911	Madre del Agua road to a dirt track	Abandoned quarry	Pink stripe, Coroco, La Pina (clearest outcrop), Las Eras