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Table 1 Composite Bomb descriptions and analysis types

From: Correction to: Silicic conduits as supersized tuffisites: Clastogenic influences on shifting eruption styles at Cordón Caulle volcano (Chile)

       Hand Thin   CT
Name Lat Long Elev Comment Figure Sample Section SEM Low High
P13-B01 -40.510 -72.177 1563 Decimetric fragments of obsidian composite around ~ 2.5 m impact crater       
P13-B10 -40.524 -72.148 1648 Pumice-dominated composite bomb with grey matrix and black foamed interior       
011-IS -40.524 -72.147 1645 Large obsidian bomb, with vesicular flow bands 3j X X X   
P13-B12 -40.524 -72.147 1645 Proximal obsidian bomb ("crat")   X X X   
P13-B13 -40.525 -72.147 1643 Obsidian-dominated composite bomb. Appears homogeneous in hand sample, composite in thin section ("mini")   X X X   
P13-B19 -40.509 -72.156 1565 Decimetric fragments of pumice- and obsidian-dominated composite material around ~ 1.7 m crater   X     
P13-B20 -40.509 -72.156 1567 Decimetric fragments of obsidian and pumice around ~ 2.1 m crater       
P13-B21 -40.509 -72.156 1567  ~ 4.2 m impact crater, with ~ 50 cm pumice-dominated composite bomb (fragment), light grey matrix       
P13-B24 -40.509 -72.156 1563 Decimetric fragments of pumice-dominated, grey-matrix composite bomb at rim of > 5 m diameter impact crater       
P13-B25 -40.509 -72.155 1563  ~ 40 cm composite bomb fragment with mingled obsidian bands and in-situ foamed clasts       
P13-B26 -40.510 -72.155 1561  ~ 4.3 m impact crater with large (< 60 cm) fragments of pumice-dominated composite bomb with light grey matrix       
P13-B27 -40.510 -72.155 1560  ~ 6 m impact crater with decimetric fragments of obsidian and pumice breccia       
P13-B32 -40.510 -72.156 1557 Fragments of obsidian-dominated composite bomb at edge of ~ 2 m impact crater   X     
P13-B35 -40.510 -72.157 1532 Large, intact, extensively breadcrusted, pumice-dominated composite bomb, with obsidian clasts < 15 cm 3c      
P13-B39 -40.510 -72.156 1544 Composite bomb with large borderless pumice separated by vein of red matrix with pumice fiamme and obsidian       
P13-B42 -40.510 -72.155 1533 Pumice-dominated composite bomb with angular obsdidian clasts, light orange matrix and no defined fabric       
P13-B43 -40.510 -72.155 1534 Composite bomb, appears lava-like on surface, but with large glassy obsidian clast at centre       
P13-B44 -40.510 -72.155 1531  ~ 1.5 m composite bomb fragment in ~ 4.5 m crater. Pumice-dominated, with many in-situ foamed and obsidian clasts       
P13-B49 -40.504 -72.155 1542  ~ 30 cm dense obsidian-dominated composite bomb, matrix and lithic in isolated domains       
P13-B50 -40.505 -72.155 1528  ~ 50 cm obsidian-dominated bomb fragment at rim of ~ 4 m crater mantled by pumice fragments   X X X   
P13-B51 -40.505 -72.153 1515  ~ 20 cm composite fragments with ~ 6 m crater. Sharp boundary between obsidian-dominated and pumice-dominated       
P13-B53 -40.505 -72.152 1503 Composite bomb dominated by borderles fiamme pumice, orange matrix, striking ~ 4 cm obsidian clast, breadcrusted 3d X     
P13-B55 -40.507 -72.154 1562 Coarse pumice-dominated composite, mixture of borderless pumice < 50 cm and in situ foamed to ~ 4 cm. Reddish matrix       
P13-B57 -40.510 -72.155 1527  ~ 1 m pumice-dominated compoiste with light orange matrix and poorly defined fabric       
P13-B58 -40.510 -72.155 1526 Matrix-dominated composite with abundant in situ foamed pumice. Colour-banded matrix from grey-red 3i, 5b X X X X  
P13-B59 -40.510 -72.154 1506  ~ 1 m obsidian bomb with no obvious matrix but lithic and in situ foamed pumice       
P13-B61 -40.510 -72.151 1452  ~ 60 cm composite dominated by borderless pumice, little matrix, and reddish interior cavity       
P14-038 -40.513 -72.157 1532 Large, breadcrusted composite. Pumice dominated but with large angular obsidian to ~ 4 cm and grey matrix 4 X X X   
P14-B02 -40.510 -72.158 1496 Large mid-density composite bombs with all clast types, variable fabric, and red oxidized matrix 3e, 5c-d X X X X X
P14-B05 ? ? ? Obsidian-dominated composite bomb with irregular domains of grey matrix   X     
P14-B52 ? ? ? Obsidian-cominated composite, no obvious matrix, in-situ foamed pumice ~ 5 cm   X X X   
P14-PIC448 ? ? ? Pumice-dominated composite bomb with poorly-defined fabric. Brownish-red matrix, and occasional obsidian       
P14-PIC41 -40.522 -72.148 1616 Dense lava bomb 3b X X X   
P14-PIC46 -40.521 -72.148 1602 Dark, dense (composite?) lava bomb       
P14-PIC40 -40.522 -72.148 1633 Dense lava bomb       
P14-PIC42 -40.521 -72.148 1600 Dense lava bomb 3a      
P14-PIC51 -40.521 -72.149 1591 Obsidian Composite bomb containing lithic clasts       
P14-PIC52 -40.521 -72.149 1581 Large, pumice-dominated composite bomb with dark oxidized interior   X X X   
P14-PIC554 -40.524 -72.147 1648 Pumice-dominated composite bomb with irregular oxidation patterns       
P14-PIC555 -40.524 -72.147 1648 Moderaly vesicular lava bomb. Oxidized on one surface       
P14-PIC556 -40.524 -72.147 1646 Irregular lava bombs, moderately vesicular       
P14-PIC557 -40.524 -72.147 1650 Moderaly vesicular lava bomb. Oxidized on one surface       
P14-PIC558 -40.524 -72.147 1648 Pumice-dominated composite bomb with red oxidized central cavity       
P14-PIC559 -40.524 -72.147 1643 Fractured, pumice-dominated composite bombs with dark/oxidized cavities       
P14-PIC560 -40.524 -72.146 1642 Pumice-dominated composite bomb with red oxizidized matrix       
P14-PIC561 -40.524 -72.146 1643 Pumice bomb, with oxidized cavity at interior       
P14-PIC562 -40.524 -72.146 1645 Large lava bomb. Several internal cavities, slight surface oxidation       
P14-PIC565 -40.523 -72.146 1650 Moderaly vesicular lava bomb. Oxidized on one surface. Large interior cavity       
P16-B01 -40.508 -72.156 1610 1.5 m diameter, pumice-dominated, breadcrusted composite bomb       
P16-B02 -40.508 -72.156 1609  ~ 80 cm diameter, obsidian + pumice, breadcrusted composite bomb       
P16-B03 -40.509 -72.156 1567 Fragments of pumice-dominated composite bomb with fabric and pink oxidized matrix       
P16-B04 -40.509 -72.156 1566 Fragments of pumice-dominated composite bomb with spase obsidian to ~ 3 cm       
P16-B05 -40.513 -72.156 1535 Pumice-dominated composite bomb fragments with glassy in-situ foamed clasts to ~ 4 cm       
P16-B06 -40.513 -72.156 1535 Obsidian, and frothed obsidian banded composite bomb (concertina)       
P16-B07 -40.512 -72.156 1531 Pumice-fiamme dominated composite bomb with pink matrix and rare obsidian to ~ 5 cm 3f, 5a X X X X  
P16-B09 -40.511 -72.153 1486 High-density, obsidian-dominated composite bomb with orange matrix 3h X X X X  
P16-B10 -40.512 -72.150 1483 High-density, glassy, obsidian-dominated composite bomb with lithics but no obvious matrix   X X X X  
P16-B11 -40.512 -72.150 1470 High-density composite with banded texture, rich in borderless obsidian, small in-situ foaming   X X X X  
P16-B12 -40.512 -72.150 1444 Moderate density pumice fiamme composite with occasional obsidian to ~ 3 cm. Breadcrusted   X X    
P16-B13 -40.512 -72.149 1456 Very high-denisty, obsidian-dominated composite with abundant lava-like lithic clasts   X X X X  
P16-B14 -40.512 -72.149 1460 Very high-denisty, obsidian composite with grey matrix   X X   X  
P16-B15 -40.511 -72.149 1474 Composite of large borderless pumice clasts with angular and platey obsidian. No obvious matrix       
P16-B16 -40.510 -72.155 1526 Matrix-dominated composite with many in-situ foamed clasts. (pebble/honeycomb bomb)   X X X X  
P16-B17 -40.519 -72.166 1503 Matrix-dominated composite with many in-sity foamed domains that are v. low density and glassy   X X   X  
P16-B18 -40.519 -72.166 1501 High-denisty, obsidian-dominated composite with thin tendrils of oxidized matrix   X    X  
P16-B19 -40.519 -72.166 1502 Pumice-dominated composite, lacking fabric, orange matrix       
P16-B20 -40.519 -72.166 1508 Composite with wide variety of angular clasts pumice > obsidian > lithics. Light pink matix, no fabric 3g X X X X  
P16-B21 -40.520 -72.166 1502 Variably-foamed, banded, obsidian + foam composite   X X X X  
P16-B22 -40.521 -72.168 1508 Slightly breadcrusted, punice-dominated composite. Grey matrix. Chaotic fabric       
P16-B23 -40.521 -72.168 1510 Breadcrusted, Pumice-dominated composite with chaotic fabric and outer obsidian rind