Mersea chronology (AD 445-661) - England

ale
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Real name: Alessandro Ravotto
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Mersea chronology (AD 445-661) - England

Postby ale » 11 Jan 2012, 10:02

Hi to all and happy new year!

While searching the web for roman pines chronologies (impossible!), I quickly retrieved an oak chronology from Crummy P., Hillam J., Crossan C. 1982, Mersea Island: the Anglo-Saxon causeway, in Essex Archaeology and History, 14, pp. 77-86 (http://cat.essex.ac.uk/reports/EAS-report-0023.pdf).

Since the forum does not allow me to attach files, I copy and paste it below as text.

The table on page 85 has a .crn similar fashion, and I just (semi-automatically) adapted it in a text editor. It contains indices (three samples from two stems) of a somewhat famous chronology from Mersea Island, that is quoted and partially published several times (see, for example, Hillam J. 1981, An English tree ring chronology, in Medieval Archaeology 25, pp. 31-44 - http://ads.ahds.ac.uk/catalogue/adsdata ... 31_044.pdf ) but this is the only case in which it is complete.

Probably Lars Ake already included it in some of English collections during his work about Oak European chronology (http://www.cybis.se/belfast/index.php) but I don’t remember seeing it as “individual series”. Anyway, if I missed it, please forgive this post.

Some other late roman/early medieval chronologies are published too in the two paper quoted above, as ring width measurements diagrams, but they are incomplete.

Best regards,
Ale

Mersea 1 Mersea Island
Mersea 2 England QUsp 445 661
Mersea 3 HILLAM Jennifer
#Retrieved from CRUMMY P, HILLAM J, CROSSAN C, 1982, "Mersea Island: the Anglo-Saxon Causeway", in ESSEX ARCHAEOLOGY AND HISTORY VOLUME 14,table 3.

Mersea 4459990 09990 09990 09990 09990 0 740 1 930 11210 11680 11310 1
Mersea 4501590 11500 11130 11220 1 750 11320 11040 1 660 11140 1 760 1
Mersea 460 660 1 670 1 950 1 760 1 290 1 290 1 480 1 290 1 480 1 580 1
Mersea 470 670 1 940 1 580 1 680 1 970 11160 1 870 1 680 11070 1 980 1
Mersea 480 490 1 880 11470 11180 1 790 1 590 1 490 11280 11090 1 990 1
Mersea 490 690 1 790 1 890 1 990 11300 11400 11400 11100 1 700 11410 1
Mersea 5001110 11210 11410 11310 11110 11010 1 980 1 960 11110 1 830 1
Mersea 510 880 21150 21230 2 810 21080 21510 21360 21570 21370 21370 2
Mersea 5201260 21040 2 950 21150 21410 21230 21260 21430 21340 2 750 2
Mersea 530 560 2 840 2 700 2 890 2 950 2 790 2 790 21080 2 590 2 450 2
Mersea 540 540 2 610 2 480 2 720 2 970 2 900 2 730 2 840 2 920 2 900 2
Mersea 5501270 2 990 21150 21020 21160 2 720 2 560 2 760 21060 21230 2
Mersea 5601280 2 930 2 900 2 760 2 620 2 650 2 940 21020 21270 21420 2
Mersea 5701400 21120 2 840 2 530 2 640 2 710 2 970 21070 21500 21130 2
Mersea 5801020 21140 21280 21050 21190 21290 21140 2 990 2 760 21120 2
Mersea 5901160 1 900 1 990 11100 11040 1 830 1 890 1 980 11040 1 780 1
Mersea 600 660 1 990 11180 1 710 1 620 1 730 1 890 11050 1 880 11000 1
Mersea 6101190 11080 11140 11150 11600 11490 11080 1 920 11010 1 940 1
Mersea 620 680 1 830 1 930 11120 11070 11130 11290 11090 11250 11040 1
Mersea 630 790 1 930 1 970 11160 1 910 1 850 1 850 11290 11060 1 860 1
Mersea 640 720 1 900 1 760 1 750 1 830 11100 1 830 11170 1 990 1 990 1
Mersea 6501230 11260 1 790 11210 1 960 1 930 1 720 11040 11080 11100 1
Mersea 6601070 1 920 19990 09990 09990 09990 09990 09990 09990 09990 0

Lars-Ake
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Re: Mersea chronology (AD 445-661) - England

Postby Lars-Ake » 11 Jan 2012, 13:15

While searching the web for roman pines chronologies (impossible!), I quickly retrieved an oak chronology from Crummy P., Hillam J., Crossan C. 1982, Mersea Island: the Anglo-Saxon causeway, in Essex Archaeology and History, 14, pp. 77-86 (http://cat.essex.ac.uk/reports/EAS-report-0023.pdf).

Since the forum does not allow me to attach files, I copy and paste it below as text.


Hello Alessandro!
As your editing efforts were distorted by the forum.... - I reedited it and put the file here:http://www.cybis.se/wikidata/mersea.crn

Yes, it is part of the member EastAnglia1 contained within the collection EnglishMaster which can be found here:
http://www.cybis.se/forfun/dendro/hollstein/ - see the section "The Belfast data" and "Files to download" where there is an EnglishMasters.zip file

By the way... it is Petra who has done the most work on synchronizing the Belfast and the English data!

If you need the original English data, you can probably get it from Cathy Tyers if you ask her! If it is OK for Cathy you can also get our synchronized versions, though they stand for our current interpretation of the data and there is no guarantee for its correctness.

It is a bit thought-provoking to read Hillam's sentence written in 1982 (it is under the tree ring index table): "In time, it should be possible to find a link between these Saxon curves and the floating Roman chronologies and so obtain a complete English tree-ring curve for the last 2000 years."
Still we are not able to give a solution and bridge the gap between Roman time and later times. Today we have two quite :) different solutions and no replication from within another region. German dendrochronologists allege that they have bridged it, but they prefer to keep their data secret as one of them put it: our research on how a correct bridging should be done "is not meaningful".
/Lars-Åke

ale
Posts: 12
Joined: 15 Jan 2009, 22:00
Real name: Alessandro Ravotto
Contact:

Re: Mersea chronology (AD 445-661) - England

Postby ale » 11 Jan 2012, 15:05

Hi Lars-Ake,

Many thanks for the editing!

Names, names!!
(...) one of them put it: our research on how a correct bridging should be done "is not meaningful".
Who is he/she? ... no, I'm joking!

Ale


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