Deprecated: Optional parameter $content declared before required parameter $post is implicitly treated as a required parameter in /srv/web/surtsey50years.utah.edu/wp-includes/functions.php on line 840
Deprecated: Return type of WP_Theme::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-theme.php on line 553
Deprecated: Return type of WP_Theme::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-theme.php on line 594
Deprecated: Return type of WP_Theme::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-theme.php on line 534
Deprecated: Return type of WP_Theme::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-theme.php on line 543
Warning: Private methods cannot be final as they are never overridden by other classes in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-session-tokens.php on line 69
Deprecated: Optional parameter $object_id declared before required parameter $taxonomy is implicitly treated as a required parameter in /srv/web/surtsey50years.utah.edu/wp-includes/nav-menu.php on line 1060
Deprecated: Return type of WP_REST_Request::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/rest-api/class-wp-rest-request.php on line 934
Deprecated: Return type of WP_REST_Request::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/rest-api/class-wp-rest-request.php on line 954
Deprecated: Return type of WP_REST_Request::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/rest-api/class-wp-rest-request.php on line 966
Deprecated: Return type of WP_REST_Request::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/rest-api/class-wp-rest-request.php on line 977
Deprecated: Return type of WP_Block_List::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 151
Deprecated: Return type of WP_Block_List::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 175
Deprecated: Return type of WP_Block_List::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 164
Deprecated: Return type of WP_Block_List::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 186
Deprecated: Return type of WP_Block_List::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 138
Deprecated: Return type of WP_Block_List::offsetExists($index) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 75
Deprecated: Return type of WP_Block_List::offsetGet($index) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 89
Deprecated: Return type of WP_Block_List::offsetSet($index, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 110
Deprecated: Return type of WP_Block_List::offsetUnset($index) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 127
Deprecated: Return type of WP_Block_List::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/class-wp-block-list.php on line 199
Deprecated: Optional parameter $block_name declared before required parameter $block_content is implicitly treated as a required parameter in /srv/web/surtsey50years.utah.edu/wp-includes/blocks.php on line 405
Deprecated: Return type of Requests_Cookie_Jar::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Cookie/Jar.php on line 63
Deprecated: Return type of Requests_Cookie_Jar::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Cookie/Jar.php on line 73
Deprecated: Return type of Requests_Cookie_Jar::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Cookie/Jar.php on line 89
Deprecated: Return type of Requests_Cookie_Jar::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Cookie/Jar.php on line 102
Deprecated: Return type of Requests_Cookie_Jar::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Cookie/Jar.php on line 111
Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 40
Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetGet($key) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 51
Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 68
Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 82
Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 91
Deprecated: Return type of ActionScheduler_DateTime::setTimezone($timezone) should either be compatible with DateTime::setTimezone(DateTimeZone $timezone): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-content/plugins/wpforms-lite/vendor/woocommerce/action-scheduler/classes/ActionScheduler_DateTime.php on line 60
Deprecated: Return type of ActionScheduler_DateTime::getOffset() should either be compatible with DateTime::getOffset(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-content/plugins/wpforms-lite/vendor/woocommerce/action-scheduler/classes/ActionScheduler_DateTime.php on line 48
Deprecated: Return type of ActionScheduler_DateTime::getTimestamp() should either be compatible with DateTime::getTimestamp(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /srv/web/surtsey50years.utah.edu/wp-content/plugins/wpforms-lite/vendor/woocommerce/action-scheduler/classes/ActionScheduler_DateTime.php on line 27 Tephra Layers – Surtsey at 50 Years
Layers of tephra deposited during the eruption and formation of Surtsey island. The deposited layers are offset by fractures that have since filled with other material.